I have a question for all of you: Is there anywhere in the SR4 rule book that discusses trolls or other large characters, and their user of heavy weapons?
For instance, there is a heavy machine gun in the equipment section whos description mentions that the gun is usually vehicle mounted but trolls may be able to use the weapon as a personal weapon.
Are there rules that govern how big of a weapon is too big for anyone other than a troll to use? Maybe a certain body rating that has to be exceeded in order to use a heavy machine gun or Panther cannon as a personal weapon?
Kind of along these same lines, I have another question: Does high strength provide any recoil compensation? Or is the Str 1 character able to compensate for LMG recoil just as easily as the Str10 Troll?
Thanks in advance,
Ryan
I know we had recoil compensation for strength in previous editions. dunno where such rules are now (arsenal maybe?).
heavy weapons are heavy. while equipment weight is now a 'common sense' rule, the average human cannot carry that much weight by himself. the average troll, otoh, is stronger than the strongest human. mayber even stronger than the strongest ork/dwarf. BEFORE he gets augmentation.
in addition to the gun itself, theres the weight of its ammo, plus whatever recoil compensation you need, such as a gyroharness.
One problem is recoil and the fact that trolls are made of meat. The energy of heavy weapons tends to scale up pretty fast and while trolls may have the mass to absorb the recoil but without special rigs (gyroharness) they are going to get bruised or broken from the gun's recoil.
A troll should be able to use heavier weapons than a human but probably only a size class different, so an LMG might qualify as an assault rifle. You start popping off large-caliber rounds and the troll's gonna suggest you mount the weapon to a jeep.
If you're going to inject RL logic into this situation, keep in mind that the recoil of an LMG is, in most cases, going to be less punishing than that of an AR.
One of the main limiters of using heavier weapons in a convenient fashion is the weight and ungainliness of the weapon. .50 caliber rifles are a decent example of this... while the recoil on the semiautomatic Barrett's has been described as being like the recoil of a 12-gauge Magnum, the fact that they're 5 feet long and weigh 35 pounds means you aren't going to see many people USING them like a shotgun.
Enter trolls...
Shorten the barrel a little bit, add the kind of furniture more appropriate for a shoulder fired rifle, and keep as much of the recoil compensation in place as you can... voila, .50 caliber battle rifle.
I think one of the reasons we're not seeing this is game balance, honestly. It'd make sense in the world to have guns designed for larger metahumans and cyborgs... they just don't do it.
| QUOTE (kigmatzomat) |
| A troll should be able to use heavier weapons than a human but probably only a size class different, so an LMG might qualify as an assault rifle. You start popping off large-caliber rounds and the troll's gonna suggest you mount the weapon to a jeep. |
I always used the rule that if the weight of the weapon was greater then strength * 2kg then the person can't effectively weild the weapon. This means firing the weapon without any support. You will still have to counter the effects of recoil as per normal.
Class Weight Strength Req
Hold-out pistol >1kg 1
Light pistol 1kg 1
Heavy pistol 1kg 1
SMG 3kg 2
Assult rifle 4kg 2
Sport rifle 5kg 3
Sniper rifle 6kg 3
Shotgun 3kg 2
LMG 6kg 3
MMG 10kg 5
HMG 25kg 13
Autocannon 40kg 20
you failed to quote the section where I said:
| QUOTE |
| The energy of heavy weapons tends to scale up pretty fast and while trolls may have the mass to absorb the recoil but without special rigs (gyroharness) they are going to get bruised or broken from the gun's recoil. |
In SR4 a troll coulduse any gun in one hand that was not required to be vehicle mounted.
We injected some sensibility and caped that at assault rifle but a troll could wield an HMG with no special attachments (although he probably wanted some).
Also in SR3 strength contributed recoil compensation. So your troll might not miss but with double uncompensated recoil on heavy weapons you still wanted the accessories.
It came out a troll could fire 2 3 round bursts with an HMG with gas vent 4 as accurately as a human could fire 2 3 round bursts with an Aries Alfa with gas vent 4.
Of cause the HMG was far more difficult to hide and resulted in a a more immediate and lethal security response.
Edward
If you are using rules that give trolls a benefit to firing guns due to their size, shouldn't you use rules that allow them to hide larger weapons due to their size?
| QUOTE (Edward @ Jun 1 2006, 03:56 PM) |
| *Snip* Also in SR3 strength contributed recoil compensation. So your troll might not miss but with double uncompensated recoil on heavy weapons you still wanted the accessories. *Snip* |
| QUOTE (Squinky) |
| If you are using rules that give trolls a benefit to firing guns due to their size, shouldn't you use rules that allow them to hide larger weapons due to their size? |
| QUOTE (kigmatzomat) |
| This goes back to trolls being made of meat. A ton of meat will absorb the recoil but the point the rifle stock hits the meat is going to be pounded into bloody hamburger once you've burned through a belt of ammo. Trolls' dermal armor helps a bit but I suspect anything short of a rhino will get bruised from the recoil of a .50BMG in autofire. Give the troll a decent harness that distributes the force over a wide area and you've got something other than a bruised, bloodied, and tenderized troll. |
| QUOTE (Shrike30 @ Jun 1 2006, 12:41 PM) | ||
Again, the recoil impulse on something like an M82 is described as being similar to that of a 12-gauge magnum shotgun. People fire those all the time. We don't have any real problem in Shadowrun giving human characters fully-automatic shotguns (asides from the fact that they have a hard time hitting anything)... why would there be a serious problem giving a noticeably heavier (and similarly-recoiling) weapon to someone who weighs 3x as much? I am made of meat. So is my little brother's girlfriend. The fact that I am double her weight (I'm 215 pounds) is one of the reasons that I'm able to run through several boxes of 12-gauge ammunition in a 12-gauge pump shotgun without really noticing, and she's not willing to get knocked around by more than 3-4 shots. I recall helping my father (a man who grew up shooting, who's shorter than I am but built heavier) sight in a bolt-action .338 Win Mag a few years ago. After 50 rounds at the range, we went home and he took off his shirt to see why his shoulder hurt so much. He had a hematoma forming on his shoulder from the recoil. A few weeks later, he took it out again to test the new recoil pad he'd installed on the (bare wood) butt of the rifle to try and cut down on the abuse he was taking from it, and had absolutely no problems with it. .50 caliber weapons like the M2HB are intended to be fired from tripods or vehicular mounts. They don't have a lot in the way of ergonomics or recoil handling... they're built to be able to provide a fairly sustained rate of fire and not overheat as much. Given proper furniture, muzzle braking, buffering, and weapon layout, putting together a .50 caliber, select-fire battle rifle for trolls would be quite doable, and I imagine they'd be able to handle them in much the same way that normal humans handle .30 caliber rifles of the same type. |
Probably the biggest issue with something like this rifle would be the bulk of the ammo box. All other issues aside, .50 is a large round. I think getting much more than 20 rounds into a magazine would just get kinda silly, in terms of carrying spare magazines around.
| QUOTE (Shrike30) |
| Probably the biggest issue with something like this rifle would be the bulk of the ammo box. All other issues aside, .50 is a large round. I think getting much more than 20 rounds into a magazine would just get kinda silly, in terms of carrying spare magazines around. |
Belted ammunition has it's own issues. It's more difficult to reload a belt feed because you've got to open up a chunk of the weapon and lay the belt into the action in the proper way, then close it and lock it without de-positioning the belt in the process. It hangs up on stuff if you've got it hanging free, makes it easier for dirt and other crap to get into the mechanism (because there's this external conveyor belt running straight into the weapon) and if it gets twisted on a link, the gun will jam on you. While a "belt pouch" could solve some of these problems, it can't handle all of them, and those belts are going to be really heavy, troll or no.
Box mags certainly seem doable, they just aren't going to be really high-capacity devices.
| QUOTE (Shrike30) |
| Belted ammunition has it's own issues. It's more difficult to reload a belt feed because you've got to open up a chunk of the weapon and lay the belt into the action in the proper way, then close it and lock it without de-positioning the belt in the process. It hangs up on stuff if you've got it hanging free, makes it easier for dirt and other crap to get into the mechanism (because there's this external conveyor belt running straight into the weapon) and if it gets twisted on a link, the gun will jam on you. While a "belt pouch" could solve some of these problems, it can't handle all of them, and those belts are going to be really heavy, troll or no. Box mags certainly seem doable, they just aren't going to be really high-capacity devices. |
Most of my reasoning was "real life fluff", actually, but that'd be a reasonable way to duplicate it. Changing the belts on a machinegun is in no way doable in (essentially) the same amount of time it takes to eject an empty magazine, slap in a new one, and hit a bolt release. I think it's mostly a matter of having the weapons fit into the combat system easily.
I am trying to remember ...
I'd say it depends
.
If your second gunner helps you, or you have set up the new belt for easy reloading, it would be one complex action.
Else it would be two (or even longer, if your second belt is in your backpack
).
| QUOTE (kigmatzomat @ Jun 1 2006, 02:13 PM) |
| you failed to quote the section where I said: This goes back to trolls being made of meat. A ton of meat will absorb the recoil but the point the rifle stock hits the meat is going to be pounded into bloody hamburger once you've burned through a belt of ammo. Trolls' dermal armor helps a bit but I suspect anything short of a rhino will get bruised from the recoil of a .50BMG in autofire. |
| QUOTE |
| Give the troll a decent harness that distributes the force over a wide area and you've got something other than a bruised, bloodied, and tenderized troll. |
| QUOTE |
| I think the big thing is that if you let a troll treat a weapon as "light" that the uncompensated recoil is not doubled. Which kind of makes sense as the weight of a troll's arm on the forward grip will provide a lot more recoil-resisting inertia than even Arnold Schwarzenneger's. IIRC, shotguns count as "heavy" weapons and I'd have no trouble with trolls considering them "light." |
I hate to throw one of my "from personal experience" in here again, BUT
MMG are designed for defencive postions while LMGs are designed for squadron assults. This is why LMGs are lighter then MMGs. This also means that even a troll could not five a MMG from the sholder. They could fire from the hip but there would still be the problem that the weapon is ment to be fired from a tripod. The weapon would be VERY hard to control. HMGs are right out of question though. Most HMGs use 50cal rounds that will give a average human a concusion if fired from the sholder. They need to be mounted into a turret to be effective (like on the top of a Hummer). The only time you will see a metahuman carting one of those around is if they are taking it somewhere to be mounted.
-- This has been another "tales from Afghanistan" moment with TBRMInsantiy --
Quiet you!
| QUOTE (TBRMInsanity) |
| MMG are designed for defencive postions while LMGs are designed for squadron assults. This is why LMGs are lighter then MMGs. This also means that even a troll could not five a MMG from the sholder. They could fire from the hip but there would still be the problem that the weapon is ment to be fired from a tripod. |
| QUOTE (TBRMInsanity) |
| Most HMGs use 50cal rounds that will give a average human a concusion if fired from the sholder. |
| QUOTE (TBRMInsanity) |
| I hate to throw one of my "from personal experience" in here again, BUT MMG are designed for defencive postions while LMGs are designed for squadron assults. This is why LMGs are lighter then MMGs. This also means that even a troll could not five a MMG from the sholder. They could fire from the hip but there would still be the problem that the weapon is ment to be fired from a tripod. The weapon would be VERY hard to control. HMGs are right out of question though. Most HMGs use 50cal rounds that will give a average human a concusion if fired from the sholder. They need to be mounted into a turret to be effective (like on the top of a Hummer). The only time you will see a metahuman carting one of those around is if they are taking it somewhere to be mounted. |
I've seen video of M60s being fired from the shoulder in support of an assault. The shooter looked to be a big guy (probably 240 pounds or so), but that's really not all that absurd. The E3 variants I've seen of the M60 weigh something like 19 pounds, only a few pounds heavier than the M249 (although obviously, the ammunition is heavier too).
.50 caliber machineguns weigh noticeably upwards of 50 pounds (usually closer to 100 when you start figuring in mounting gear and all that good stuff), before you add on a belt of ammunition. .50 caliber rifles, on the other hand, weigh 25-35 pounds and are frequently fired by infantry and sport shooters without much in the way of reported concussions. The recoil just isn't that bad, because the gun has been designed to be fired by a person holding it, instead of from a tripod or ring mount, and so despite the fact that the gun's weight is a fraction of the weight of a .50 MG, it's recoil is manageable.
Kick us up to 2070, where we have trolls a meter taller than everyone around them and weighing in at 250+ kilos without working at it, I don't see why they wouldn't be able to handle an autofire-capable 50 caliber shoulder weapon, since people 1/2 of their weight and 2/3 their height can handle the semiautomatic ones.
I have to agree that it's not so much mass, as the ergonomics of the weapon. A weapon designed for a vehicle mount just isn't going to be able to be handled by a troll, no matter how large. If the GM wishes to add enough supports and alterations to make the weapon easily handled without mounts, then there's no reason why a troll shouldn't be able to use it fairly readily.
Where to start:
1. MMG has a minimum of a 7.62mm ammo with the kick of a shotgun when it is fired off of support (ie bipod/tripod)
2. While it is true most HMGs have no stock there are models out there with stocks (used by infantry for better accuracy when firing) Perfect example is the HMG fired from the Hummer in the Green Day video "When September ends"
3. The M60 is a LMG. If actually fires 5.56mm rounds like the M16.
I fully disagree with the classification of the Machine guns in the SR4 manual. Technically the LMGs would include both the White Knight and the Stoner-Ares Machine guns (which is why they have the same damage code). The MMG would include the Ultimax Machine Gun and there is not HMG in the book. An HMG would have a similar damage rate as the Assult cannons and would only fire in FA mode.
M60 in 5.56mm, oh me, oh my. Quartermasters everywheer are breaking out into a cold sweat. They've been issuing the wrong ammo for all these years!
I don't claim to be an expert in these matters. I'm British and we don't have the love affair with guns that some others do.
I did however, look at Wikipedia which, judging by the number and depth of the firearms entries, is frequently updated by "enthusiasts", and that suggests that the M60 takes a smaller rifle round while the M2 is listed as using a .50 cal round.
My perusal of Wikipedia has also led me to the impression that the increased weight of a machine gun is due to a heavier barrel to slow overheating and allow more continuous rates of fire and increased weight helps reduce recoil, improving accuracy. There is a quite interesting article in Wikipedia about the SA80 and variants, which, despite their many flaws including extra weight, are considered more accurate, although this is likely also due to the long barrel. Oh dear, now I'm beginning to sound like a gun "enthusiast" as well ^^
Getting back to the topic in question, I would permit a Troll to wield a larger weapon than the other metatypes, although as the weapon would have to be custom built I'd work out with the player in advance exactly what it was capable of. Unlikely to be much of a problem in my games, as I've yet to have someone play a Troll gun bunny. I did have a troll adept known as Flash once. He wore red body fitted armour and moved really fast!
Remember that all troll firearms will haveto be 'custom built' in the first place, to allow for their larger hands, thicker fingers, etc...
I more meant if they wanted something with special stats, rather than just buying one of the stock guns with a percentage price adjustment for troll sized ergonomics. Of course that does bring up the point of a troll gaining a concealability increase for hiding regular sized ordnance again...
I'd be inclined to refuse... far too confusing.
<edited for typo>
Well, so far there have been no 'special stats' mentioned. Just take the stats for an HMG, pay the troll customization costs and go to town.
I guess that would be pretty quick and easy...
Meh... in the game I'm running my runners are keeping a low profile, for all that the Orc face wants to break the seal on his AK, the others won't let him.
| QUOTE (ornot) |
| I don't claim to be an expert in these matters. I'm British and we don't have the love affair with guns that some others do. I did however, look at Wikipedia which, judging by the number and depth of the firearms entries, is frequently updated by "enthusiasts", and that suggests that the M60 takes a smaller rifle round while the M2 is listed as using a .50 cal round. My perusal of Wikipedia has also led me to the impression that the increased weight of a machine gun is due to a heavier barrel to slow overheating and allow more continuous rates of fire and increased weight helps reduce recoil, improving accuracy. There is a quite interesting article in Wikipedia about the SA80 and variants, which, despite their many flaws including extra weight, are considered more accurate, although this is likely also due to the long barrel. Oh dear, now I'm beginning to sound like a gun "enthusiast" as well ^^ Getting back to the topic in question, I would permit a Troll to wield a larger weapon than the other metatypes, although as the weapon would have to be custom built I'd work out with the player in advance exactly what it was capable of. Unlikely to be much of a problem in my games, as I've yet to have someone play a Troll gun bunny. I did have a troll adept known as Flash once. He wore red body fitted armour and moved really fast! |
| QUOTE (TBRMInsanity) |
| 1. MMG has a minimum of a 7.62mm ammo with the kick of a shotgun when it is fired off of support (ie bipod/tripod) |
| QUOTE (TBRM) |
| 2. While it is true most HMGs have no stock there are models out there with stocks (used by infantry for better accuracy when firing) |
| QUOTE (TBRMInsanity) |
| An HMG would have a similar damage rate as the Assult cannons and would only fire in FA mode. |
| QUOTE (ornot) |
| and that suggests that the M60 takes a smaller rifle round while the M2 is listed as using a .50 cal round. |
I figured you had at least passing knowledge of these things, based on your previous posts ^^
I find calibre nomenclature to be rather confusing and so many variable calibres have been mentioned in this thread it is hard to keep up.
I did visit the website of the current manufacturers of the M60, U.S Ordnance Inc. (http://www.usord.com/) one can view their FAQ
| QUOTE |
| Q: What type of Ammunition does the M60 Series of machine guns fire? A: 7.62 x 51 mm NATO ammunition M61: Armour Piercing used against lightly armored targets. M62: Tracer used for observation of fire, incendiary effects, signaling, and training. M80: Full Metal Jacket Ball Against light materiel targets and personnel, and for range training. M82: Blanks used During training when simulated live fire is desired (A blank firing attachment must be used to fire this ammunition). M63: Dummy round used during mechanical training. |
The particular cartridges fired by these weapons may well change, obviously, but assuming humans (or roughly human-sized metahumans) still determine what are called LMGs, MMGs and HMGs, etc.; assuming that wars are still waged in ways similar to how they are waged now; and assuming the basic operating principles of firearms do not change -- all of which appear safe assumptions according to the canon SR world -- the weapons that fill these roles in the 2060s and 2070s will still fire ammunition that is very similar, or even identical.
That FAQ must be old, since it makes no mention of the current 7.62x51mm AP round (the M993). The M61 with its steel penetrator is Ye Olde Skool.
I click on this thread again and my fulloshitometer goes haywire. WTF?
TBRM has that effect Raygun. Don't worry, just stick your head in the invisible flashlight thread and you'll forget all about it.
| QUOTE (TBRMinsanity) |
| MMG has a minimum of a 7.62mm ammo with the kick of a shotgun when it is fired off of support (ie bipod/tripod) |
| QUOTE (TBRMinsanity) |
| The M60 is a LMG. If actually fires 5.56mm rounds like the M16. |
| QUOTE (TBRMinsanity) |
| If you must know I am a parital expert on this matter. I have been trained on a wide range of firearms (ranging from pistols to MMGs). I know how they fire, I know how they work, I know what is feasible and not when firing these weapons. |
I suddenly want to go fire off a 10 ga. mag and see what it does to my shoulder.
So 1.5 oz @ 1600 fps?
Now to find someone stupid enough to lend me a 10. ga...
You can get 1.25oz slug loads to 1600fps with a 3½" 12 gauge, in case you can't find 10 gauges. Any .338 or bigger magnum ought to be comparable from medium weight sporting rifles.
Oh, and I concur with Shrike30: we simply must know.
The main reason I say HMGs only fire in FA is because of how 90% of them are designed. Most have a fixed pin receiver group which is great for fully automatic weapons but hard to design for SA or burst fire. Plus with HMGs your most likely shooting at vehicles not people, and as a result you want to hit the enemy vehicle with as much lead as humanly possible.
Anyone who wants to experience what it is like to fire these sorts of weapons should look into joining their countries infantry. Some countries have a reserve/home guard unit that allows them to be part time soldiers in your country's army. The other way is to see if local gun clubs are allowed to test fire these weapons (for LMGs and above I thing only the US allows them on gun ranges).
I'll pass on joining the military just to play with autofire weapons.
The physical training would probably kill me anyway!
| QUOTE (TBRMInsanity) |
| Anyone who wants to experience what it is like to fire these sorts of weapons should look into joining their countries infantry. |
| QUOTE |
| Lucky me for not having a real choice in the matter. |
Given my country's current foreign policy leanings, I think I'll pass on joining the military, thanks. Getting shipped to another part of the world to have roadside bombs blown up at me in the name of preserving freedom isn't something I feel like getting into.
I've got a lot of respect for the troops running the risk of getting hurt or killed every day for something they believe in, I just think that the people putting them in harm's way have dubious motivations for doing so.
Because remember kiddies, theres a differance between supporting your tropps, and supporting your evil ov... erh i mean goverment.
Thank God I work for a good government.
| QUOTE (TBRMInsanity) |
| The main reason I say HMGs only fire in FA is because of how 90% of them are designed. |
| QUOTE |
| Most have a fixed pin receiver group which is great for fully automatic weapons but hard to design for SA or burst fire. |
| QUOTE |
| Plus with HMGs your most likely shooting at vehicles not people, and as a result you want to hit the enemy vehicle with as much lead as humanly possible. |
| QUOTE |
| Anyone who wants to experience what it is like to fire these sorts of weapons should look into joining their countries infantry. Some countries have a reserve/home guard unit that allows them to be part time soldiers in your country's army. The other way is to see if local gun clubs are allowed to test fire these weapons (for LMGs and above I thing only the US allows them on gun ranges). |
Edited because on retrospect it added nothing to the thread. My apologys.
I don't think people are getting the point I'm tring to make about HMGs, they are just too heavy, too big, and too powerful. NO troll would be able to fire one of these weapons unsupported (or even with a full gyroscope stabalizer). The only way your going to get one of these weapons to fire in a personel mode is if you attach it to an exosceleton that can handle the stress these weapons produce.
I think the point you're missing, is just how big, heavy, and strong a troll is, and how much less the forces invovled seem like when you are that big, strong and heavy.
| QUOTE (TBRMInsanity) |
| I don't think people are getting the point I'm tring to make about HMGs, they are just too heavy, too big, and too powerful. NO troll would be able to fire one of these weapons unsupported (or even with a full gyroscope stabalizer). The only way your going to get one of these weapons to fire in a personel mode is if you attach it to an exosceleton that can handle the stress these weapons produce. |
I don't think what he's saying is about mass, Ray. I think he's caught up on the fact that an HMG is not likely to have a standard rifle shaped support (IE, a stock - think of the handles on a Ma Duece), and that it's going to be generating a LOT of impact on a relatively small point - like me. I've got a smegging lot of mass, and firing a shotgun repeatedly - especially if it's got ridiculously hot loads - is still going to bruise the shit out of my shoulder.
That said, what would be an HMG round to a human would easily be an AR round to a Troll, if he were firing a weapon specifically made for his MetaType, and not just a human weapon fitted for troll hands.
I think I understand where he is coming from, let me try to explain it this way.
I was an INF in the US Army. I weighed (at the time) 250 pounds, about 140 kilos. I stand 76 inches or 6'4", just a little over two meters tall. For a time I thought it would be cool to be the M60 gunner, so I volunteered. Now the 60 is considered a GPMG, or a MMG depending at how you look at it.
Now the M60 I used had a rifle stock. So you could fir it from the standing position, it wasn't easy but you could do it. The preferred way for me was crouching. It too to much to lay down, and I could stay mobile if I was kneeling/crouched.
The .60 fires a 7.62 round, the same, or very similar round fired by many AR's. There is no reason why that gun couldn't be carried like an SMG by a troll. Seriously. A troll weighs 3 times as much as me. At least 600 pounds. And is 3 feet taller, two feet wider than me. If I can use a M-60 like an AR, then a troll should have no problem shooting it like a SMG. Whats 17 pounds to someone who can lift 400?
Now a Ma Duece .50 cal weighs about 75 pounds unloaded. But some of that is the tripod and the connector. Remove those and you could probably get it down to 50 pounds. Thats 4 times what a M60 weighs. So a troll who is 3 times bigger than me, could easily manage a 50 pound gun using both hands. Easily.
Thats it, they are that big that it really would not be a problem. It would be like us using a big AR. It would have to be redesigned ergonomically, but hey, your going to do that anyways.
I'm thinking the application would be a little more like a battle rifle (to humans, the M-14/G-3/FAL "class" of weapons in .308). Has an autofire setting, but is usually used on semiautomatic because the round is heavy enough to sit someone down hard on a solid hit, you've only got 20 rounds in the mag, and the recoil makes the gun walk around some on full auto. Going cyclic is a bit of a waste. I get the impression I'm imagining the recoil affecting the troll a little more than some others are (Raygun, my impression of your imagined troll weapon has it being used more like a .223 assault rifle than a .308 battle rifle), but that's not a very large difference.
I see I'm not being listened to so I'm dropping this thread.
Hey, I'm listening. I just think you're wrong
| QUOTE (Shadow) |
| I was an INF in the US Army. I weighed (at the time) 250 pounds, about 140 kilos. I stand 76 inches or 6'4", just a little over two meters tall. For a time I thought it would be cool to be the M60 gunner, so I volunteered. Now the 60 is considered a GPMG, or a MMG depending at how you look at it. |
| QUOTE |
| Now the 60 is considered a GPMG, or a MMG depending at how you look at it. |
| QUOTE (Butterblume) |
| Since the MG42 most portable machine guns qualify as GPMG (General Purpose Machine Guns), meaning they count as light when carried by infantry and medium when mounted on a tripod or vehicle. |
Hm, can you still be a General Purpose Machine Gun with a toy calibre of 5,56mm?
I am not an engineer, which is why my conversion is off, they are just "best guess". And you are right, the Tripod on a M2 is freeking heavy, so you lose a lot of weight when you drop it.
I never noticed that the basic HMG in the SR4 book has a 3(10) recoil compensation.
A Troll or a strong Ork would be strong enough to lug that around. Like mentioned in the text, it might even be fired standing... (After all, shockpad and gas vent 3 gives 4 point recoil compensation, probably enough to shoot a long burst)
I've got a pretty funny image in my head at the moment...
In the beginning of the getaway scene in Heat (which rapidly degenerates into the massive downtown shootout scene), the characters inside of the car don't roll down the windows and try to stick their bodies out of a speeding car in order to shoot forwards... they just start shooting through the windshield. I can imagine how loud (and bright, with a carbine) that'd be inside of a vehicle.
Skip forwards to 2070...
The van slews around a corner and accelerates, building up speed towards the Lone Star roadblock. "We got company, folks!" yells the rigger, as bullets start hitting the van, starring the windshield and punching holes in the radiator. "Frag these cops," growls the troll in the backseat, dragging the 12.7mm up between the front seats and levelling it through the windshield, flipping the selector to autofire. "Uh, Zeek, hold on a...." is as far as the front passenger Flea gets, before the windshield is blown out of the frame riding 12 cubic feet of muzzle flash, and everyone's blast dampening kicks in...
| QUOTE (ShadowDragon8685) |
| I don't think what he's saying is about mass, Ray. I think he's caught up on the fact that an HMG is not likely to have a standard rifle shaped support (IE, a stock - think of the handles on a Ma Duece), and that it's going to be generating a LOT of impact on a relatively small point - like me. I've got a smegging lot of mass, and firing a shotgun repeatedly - especially if it's got ridiculously hot loads - is still going to bruise the shit out of my shoulder. |
| QUOTE (TBRMInsanity) |
| I don't think people are getting the point I'm tring to make about HMGs, they are just too heavy, too big, and too powerful. NO troll would be able to fire one of these weapons unsupported (or even with a full gyroscope stabalizer). The only way your going to get one of these weapons to fire in a personel mode is if you attach it to an exosceleton that can handle the stress these weapons produce. |
| QUOTE (Shadow) |
| A troll weighs 3 times as much as me. At least 600 pounds. And is 3 feet taller, two feet wider than me. |
| QUOTE |
| Now a Ma Duece .50 cal weighs about 75 pounds unloaded. |
| QUOTE (Shrike30) |
| I get the impression I'm imagining the recoil affecting the troll a little more than some others are (Raygun, my impression of your imagined troll weapon has it being used more like a .223 assault rifle than a .308 battle rifle), but that's not a very large difference. |
| QUOTE (TBRMInsanity) |
| I see I'm not being listened to so I'm dropping this thread. |
| QUOTE |
| According to Patrick Goodman's excellent article found in TSS #13, the average Troll would weigh more like 1,083 lbs, considering other factors mentioned in canon. |
That is (somewhat) based on an "SR1-3 Troll". I was unaware that they had changed the height/weight for Trolls in SR4. Incidentally, the weight still appears to be a bit off in SR4. In proportion to its height (using the formula provided in Goodman's article), I come up with a proper weight of 763 lbs (346.2kg).
Troll, average weight (SR4): 763 lbs
Rifle, M2HB: 84 lbs, unloaded (11% body weight)
Load: 660 grain FMJ @ 2910 fps (US M33)
Propellant Weight: 235 grains
Recoil: 36.7 fpe @ 5.3 fps
36.7/763 = 0.04809 fpe/lb
Still about half the recoil of human/M14, however, the "rifle" is proportionately nearly twice as heavy (17 lbs to an average human, a bit less than an M240B).
Troll, average weight (SR4): 763 lbs
Rifle, (hypothetical): 42 lbs, unloaded (5.5% body weight)
Load: 660 grain FMJ @ 2910 fps (US M33)
Propellant Weight: 235 grains
Recoil: 73.3 fpe @ 10.6 fps
73.3/763 = 0.09606 fpe/lb
That's a lot of recoil, definitely unmanageable in full auto without some kind of recoil management. However, utilizing an efficient muzzle brake or a recoil management system like the http://www.globalsecurity.org/military/systems/ground/m312.htm, it would likely work just fine. Still no harness or anything like that needed. There's also no reason why the "rifle" couldn't be a tad heavier, say up to 8% body weight (61 lbs/troll).
Of course, then you get to the fact that trolls can carry and use 'really heavy weapons' as an MMG. A fire support troll carrying around a 25 or 30mm automatic grenade launcher /light autocannon on a bipod might be pretty handy to have around.
I think the real limiters on troll heavy weapons will probably be the ammunition weight.
I think weight is honestly less of a concern than volume. If you're making 20 round .50 caliber magazines, those get kinda bulky kinda fast.
| QUOTE (Raygun) |
| I hope you guys appreciate this. |
I once stood in a rowboat, propped 2 60's on my hips, and just started rockin'! And I didn't stop rockin' until I was waist deep in brass and sinking! And I did it all without sweating into my bitchin' red shvetband.
Using Raygun's format:
Human, average weight: 154 lbs
M240B GPMG: 24.2 lbs, unloaded (15.7% body weight)
Load: 146 grain FMJ @ 2750 fps (US M80)
Propellant Weight: 46 grains
Recoil: 5.1 fpe @ 3.7 fps
5.1/154 = 0.03312 fpe/lb
Troll, average weight (SR4): 763 lbs
Rifle, (hypothetical 25x59Bmm "MMG"): 84 lbs, unloaded (11% body weight, about same as a Mk 48 Mod 0 for a human)
Load: 2037 grain HEDP @ 1750 fps (US XM1049?)
Propellant Weight: 50 grains (from earlier correspondence with Raygun)
Recoil: 52.1 fpe @ 6.3 fps
52.1/763 = 0.06828 fpe/lb
Troll, average weight (SR4): 763 lbs
Rifle, (hypothetical 20x102mm "HMG"): 105 lbs, unloaded (13.8% body weight)
Load: 1543 grain HEI @ 3280 fps (US M56A3)
Propellant Weight: 585 grains
Recoil: 213.9 fpe @ 11.5 fps
213.9/763 = 0.28034 fpe/lb
So, uhh, I guess trolls using AGLs as personal weapons will work, to an extent. High velocity 40mm rounds (like the ones fired from a Mk 19) will cause heftier recoil than the 25x59Bmm loads of an OCSW, though. But using automatic cannons, even relatively "light" 20mm ones, is probably out of the question. The felt recoil to a SR4-type troll from a 20x102mm cannon would be significantly worse than that from an M2HB to the average human.
Yeah, even a troll would have trouble with autocannons, I'd say. However, they could probably pull the Predator trick and use a smaller caliber minigun...that'd be plenty unpleasant for anyone on the receiving end, even if it would necessitate a gigantic backpack for all the ammo.
They could definitely use small arms caliber miniguns. There's significant bulk involved in the weapon itself, the power source, and the ammunition, as you said, but beyond that it wouldn't cause serious problems for trolls. With those arms the torque is a non-issue, and the total (uncompensated) recoil force relative to mass is about the same as that for a human firing an M60.
I would like to point out that the power source is likely less of a problem. They seem to have made some significant advances in battery technology.
I was actually mentioning it because I wasn't sure what parts, exactly, come under the header "power source" when talking about minigun components. Apparently, at least in the case of an M134, it's just the battery and cable, so you can largely forget about that bit. It'd be a minor hindrance compared to the ammo, anyway.
So much ammo.
http://www.dillonaero.com/4400.html
Of course, using the SR rules, it would take a un-augmented human holding the trigger down ~14.67 minutes to use all that ammo up (15 rounds an action and 20 actions a minute)
Hey, you might well want to surpress for that long.
What about in real-life rules? How long would it really take a minigun to burn through 4400 rounds?
With that particular weapon, 1 minute 6 seconds with the higher RoF (4000rpm), 2 minutes 12 seconds with the lower (2000rpm). 4min 24 seconds with an http://world.guns.ru/machine/mg06-e.htm, 8 minutes with an http://world.guns.ru/machine/mg12-e.htm -- though either is likely to have a barrel failure before you get through all of that.
I recall seeing a demo from one of the big shoots last year of one of the new M60 mods... it's down to about 18 pounds, and they were able to run 850 rounds of ammo through it without stopping once. I wonder if they could quintuple that amount...
The M60E4. They tried the same thing before in an earlier shoot, and the barrel blew out at around 800-something. You could probably get higher if it were done when its freezing outside instead of on a hot day in a desert, but I wonder if you can reliably get any air-cooled GPMG to over 2000 rounds cyclically. 4400 would be really pushing it, even with the sturdiest and most reliable MGs.
Take a note from computer cooling: add heat sinks along the barrel, inside of a shroud to protect the user's hands somewhat. It'd add a few pounds, but as a technical exercise, it'd be amusing...
Make it like the Lewis gun, only with maximized surface area heat sinks like you said. Way more practical than having a revolving barrel and bolt array.
The question would be, of course, can we get one of the dumpshock CE dudes to clue us in on how much cooling we could get out of this...
| QUOTE (Shrike30) |
| I think weight is honestly less of a concern than volume. If you're making 20 round .50 caliber magazines, those get kinda bulky kinda fast. |
| QUOTE |
| Raygun love is ALWAYS appreciated. |
| QUOTE (Raygun) |
| That's not a whole lot of rounds to fire, but even so, it does represent an awful lot of firepower. I mean, can you imagine that? |
| QUOTE (Raygun) |
| That's not a whole lot of rounds to fire, but even so, it does represent an awful lot of firepower. I mean, can you imagine that? |
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