 Barret Ammo, Different ammo? |
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 Dec 27 2003, 07:53 PM
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#26
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Mostly Harmless  Group: Dumpshocked Posts: 937 Joined: 26-February 02 From: 44.662,-63.469 Member No.: 176  |
Assuming that the barrel can easily be removed from the receiver and that there's enough space in the neck area of the case to accomodate both the receiver and the barrel separately. A suppressor for this kind of rifle is also going to be around 3"x20" in size (or slightly smaller), so there's really a lot you'd have to stuff into that case.
About suppressors for rifles like these... There's really no way that you can contain all of the muzzle blast from a round like the .50 BMG without attaching a device that's much bigger than the rifle itself and is totally impractical for field use. Suppressors for .50 BMG rifles are generally intended to reduce the signature of the rifle to that of a smaller rifle, reducing the visual signature of dust and debris kicked up during a shot, reducing the amount of smoke cast into the atmoshpere, your spotter doesn't get a face full of muzzle blast, etc... The amount of sound reduction generally brings the report down to the level of an average unsuppressed hunting rifle, like a .308. But there are some .50 BMG suppressors that can bring the report down below the threshold of pain (140dB). Even then, it will still sound like a rifle, but what you're doing is reducing the range at which it can be heard. You're also allowing your operators to work without the need for hearing protection. These suppressors also reduce recoil to levels comparable with common muzzle brakes. Really, you can chalk up Hatchetman's "further away than a few meters, I've heard no gun noise whatsoever" line as total and complete horseshit. There would still be plenty of muzzle flash, you'd easily hear the bullet whizzing downrange supersonic, and you'd hear the bolt clacking back and forth. |
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Dec 27 2003, 08:20 PM
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#27
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Great Dragon Group: Members Posts: 5,889 Joined: 3-August 03 From: A CPI rank 1 country Member No.: 5,222 |
Humorous understatement, eh? :D Having done demolitions training 300 meters away, on the other side of a forest hill, from a 12.7x108mm AAMG, I can testify that it's certainly more than a whizz. ;) I still remember that horrible ripping sound of the bullets glancing the waves... |
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Dec 28 2003, 04:57 PM
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#28
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Mostly Harmless Group: Dumpshocked Posts: 937 Joined: 26-February 02 From: 44.662,-63.469 Member No.: 176 |
Oh yeah. That is definitely an understatement. The biggest bullet I've been near while it was in flight was a 220 grain from a .300 Weatherby, and "whizzing" really doesn't even do that justice. I'm sure it's pretty hard to mistake the sound of a bullet at least three times that mass flying past you. I wish I had an example if that sound to post here. It's frighteningly distinctive. Once you recognize it, you don't really want to hear it again unless it's heading away from you.
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Dec 29 2003, 12:28 AM
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#29
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Canon Companion Group: Members Posts: 8,021 Joined: 2-March 03 From: The Morgue, Singapore LTG Member No.: 4,187 |
You should try a 30mm cannon round... now that will raise the hairs on your neck...
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Dec 29 2003, 12:30 AM
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#30
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Great Dragon Group: Members Posts: 5,889 Joined: 3-August 03 From: A CPI rank 1 country Member No.: 5,222 |
Or a 155mm arty round flying 10km overhead...
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Dec 29 2003, 12:48 AM
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#31
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Running Target Group: Members Posts: 1,428 Joined: 9-June 02 Member No.: 2,860 |
155mm cannons can and have been silenced. Or suppressed anyway.
Some neighbors complained and the German Army obliged them with a silencer for testing a howitzer: http://www2.ci-n.com/~jcampbel/images/howi...er-silencer.jpg Maybe ya'll have seen that before. If not, enjoy. I figure it demonstrates that suppression knows no limits if you're willing to accept gizmos that look ridiculous on the end of your weapon's barrel. |
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Dec 29 2003, 12:57 AM
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#32
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Great Dragon Group: Members Posts: 5,889 Joined: 3-August 03 From: A CPI rank 1 country Member No.: 5,222 |
That's still only partial suppression. The sound from the M109 itself (or, more accurately, from the M185 or M284 cannon) might not be as insanely loud, but it's still likely to be heard more than a few meters away... 150dB? 160dB?
The shell itself is probably not slowed down at all, it might in fact be speeded up slightly, so the spine-chilling *RIP* is still there. Not horribly loud to us humans down here, but certainly can be heard and distinguished. Still, that picture can never be linked too often. :) This post has been edited by Austere Emancipator: Dec 29 2003, 12:58 AM |
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Dec 29 2003, 01:31 AM
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#33
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Neophyte Runner Group: Members Posts: 2,156 Joined: 15-March 03 From: Fresno, CalFree Member No.: 4,252 |
That silencer looks like a camo wang...
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Dec 30 2003, 01:12 AM
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#34
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Mostly Harmless Group: Dumpshocked Posts: 937 Joined: 26-February 02 From: 44.662,-63.469 Member No.: 176 |
At least. A projectile that big is going to make a lot of noise just flying. Silencer: History and Performance, Vol. 1 says that a "122mm Howitzer" makes 183dB of noise. That's about 35dB away from a pressure wave that can kill you mechanically. No projectile necessary. I can't guess as to how effective that howitzer suppressor is. But it looks like it probably works pretty darn well. |
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Dec 30 2003, 03:27 PM
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#35
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Moving Target Group: Members Posts: 198 Joined: 26-December 03 Member No.: 5,935 |
Has anyone thought that maybe it's sub-sonic ammo with a terminal guidance system that fires off a rocket charge right before impact to give it it's 14D punch?
When they say special ammunition you've got to start thinking unconventionally. If it was conventional munitions then it would be interchangable (or at least could be modified to be). As far as Hatchet's comment, maybe he was refering to the rifle itself. He doesn't say he heard nothing, just that he heard no gun noise. An electic firing system and an incredible silencer at several meters would do that I think. |
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Dec 30 2003, 03:40 PM
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#36
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Great Dragon Group: Members Posts: 5,889 Joined: 3-August 03 From: A CPI rank 1 country Member No.: 5,222 |
Well, I certainly haven't. Probably because I do not consider something as small as a Barrett bullet to be an efficient platform for a guided projectile with rock boosters. If it was indeed sub-sonic, it would take ~3 seconds, or a full SR Combat Turn, for the bullet to reach the maximum range of the Barrett (1km). That's assuming the bullet isn't slowed down at all after it has left the barrel, which isn't going to happen. This would make for very interesting sniping.
Yes, incredible being the central word. :) |
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Dec 30 2003, 04:02 PM
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#37
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Moving Target Group: Members Posts: 198 Joined: 26-December 03 Member No.: 5,935 |
I was wondering if anyone would pick up on that choice of words :D
Right, which is why the bullets have onboard guindence, nanofins, maybe a impeller engine of some sort. The booster charge doesn't have to be very big just controlled properly. Like I said, you've got to think exotic. Though I would think the bullets would cost a lot more then. |
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Dec 30 2003, 10:54 PM
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#38
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Moving Target Group: Members Posts: 608 Joined: 9-July 02 From: California Member No.: 2,955 |
I think that the writers really hadn't shot much or read much when they wrote the books. Or there was some nice crack going around the office.
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Dec 30 2003, 11:02 PM
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#39
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Moving Target Group: Members Posts: 198 Joined: 26-December 03 Member No.: 5,935 |
I'm not saying it makes sense. I'm just trying to rationalize what we've got instead of point out just how unrealistic it is.
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Dec 30 2003, 11:11 PM
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#40
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Moving Target Group: Members Posts: 973 Joined: 3-October 03 Member No.: 5,677 |
Exactly what my friend Sahandrian thought. |
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