I don't think that's so hard to believe, since HMGs are .50 caliber while MMGs... well... aren't? MMGs would be mounted for vehicle-on-vehicle or vehicle-on-infantry combat, while HMGs are mounted for ground-to-aircraft combat. The HMGs should be noticeably more powerful.

Out of interest, where does it say the Sakura Fubuki fires four-round bursts?

Also, has anyone looked at high-velocity weapons yet? I ended up spending my lunch break thinking about this a while back, and here's what I came up with:

Previously SR's HV weapons have put a lot of near-uncontrollable lead into the air, sacrificing accuracy for sheer damage. However, the new long burst and narrow/wide rules sort of negate their bonuses a little. Therefore, I took a leaf out of the real-life P90 and MP7- rather than the wall-of-lead approach they fire higher-velocity rounds at standard rates, lowering the effective recoil impulse. Damage is reduced as the smaller and lighter bullets cause a smaller wound cavity, however this is made up for as the small, fast bullets penetrate armour easier.

Rules:
Hypervelocity weapons are available as machine pistols, SMGs, Assault Rifles and Machine Guns. They receive -1DV and -1AP in comparison to an average weapon in their class (eg. an Assault Rifle would be, taking the FN HAR as a base, 5P with -2AP). Short bursts may only be narrow, and take recoil as per SA (ie. -1 for second shot in a pass). Long bursts take only -2/-3 recoil penalties, full auto takes -5. No barrel-mounted accessories are allowed. Cost is roughly double that of a comparable regular weapon.

The net result is that while HV weapons don't have the raw DV, they make up for it with improved handling and better performance against armour out of the box. Their other downside is the lack of barrel mods- you can't silence them (making the bullets subsonic defeats the purpose) and it's difficult to cram a lot of recoil compensation onto them. A HVAR will still be outperformed by an Alpha with Gas Vent III and a shock pad.

Any suggestions?

Most sound suppressors attached to the muzzle of a small arms will not slow down the bullet at all. In fact, they often end up increasing the velocity slightly, since they give the propellant gases a bit more time and space in which to push the bullet forward.

You can suppress firearms which fire supersonic projectiles -- the purpose is not so much to evade detection altogether, since the projectile ripping through the air will probably be heard, but to hide your own position by reducing/eliminating the *crack* of firing a weapon (and replacing it with a less loud and less obvious noise) and the muzzle flash.

If you're at all interested in how sound suppressors work, I suggest reading Raygun's excellent article on them.

I'm not sure where your GM is getting this, but I wouldn't call firearms "highly illegal" in the Sixth World -- certainly not in the typical settings that most 3rd Edition material was published for.

In the BBB under the weapon's description. it can only fire a narrow burst in this mode though & has the recoil of a normal Semiautomatic (-1) for the second burst.

I don't think that necessarily says what you say it says.

So your interpretation of that passage is that each time the weapon is fired it fires one bullet from each of the four barrels? Is that what you're saying?

That indeed sounds ripe for the old Bic fix.

...it was more interpeting that the four inline barrels fired simultaneously. In a way that concept could make sense since the weapon is fired electronically. This is why it would only be capable of firing a narrow burst and would explain the low recoil factor.

FAQ on this?

apparently it gives you burst fire with the same recoil penalty as semiautomatic, and not much more.

The odds against that happening are quite staggering, no matter how you fire that burst. Even if you eliminated the effects of recoil, there are so many causes of inaccuracy in a weapon like the YSF that 4 consecutive rounds fired at max RoF from one barrel would not impact much closer to each other at 20+ meters than 1 shot from each barrel fired at the same intervals.

Somewhere I can't find now there was a video where a 4 barreled grenade launcher first spits out one grenade from a barrel, then two more in semi rapid succession though with plenty of time for recoil. Then the other three barrels each fire a single grenade. They were all dummies but no reason there couldn't have been flashbangs in one, and frag grenades in the other three.

The only reason in RPGs that you dont have mixed ammo is because it's a pain in the ass to keep track of it. It also causes issues when it's a multi barreled weapon capable of firing more than one barrel at the same time. Like a previous mention of loading an elephant gun with one EX-EX and one APDS round. It isnt really realistic to use both rules at the same time, and there's no real rule mechanism to handle each round sepereately. And attempts to HR it lead to either a very weak gun in such a situation, or one that effectively 'instagibs' trolls.

Cases like pump action shotguns etc. It's abit easier, since your only firing one round at a time etc. But the moment you mix ammo in a multi barrled or burst/full auto firing weapon you realy get into alot of unecessary complexity. Sure you could come up with arguably 'realistic' rules. But chances are, balance wise it'll be so uber overpowered it wouldnt be funny, that or downright usless.

And then to top it off it bogs down combat that much more. Ultra complex rules are fine and very fast when it's an automatic coded system. But it's alot slower when it's a pen and paper style of game.