QUOTE (Ed_209a @ Apr 1 2008, 08:35 AM)

I like 1200 RPM+.
Design wise, there really isn't that much difference between 750 and 1000 RPM. You can float within that range by just changing the weight of the bolt and changing how much gas blows back to operate the action. 1200+ represents a specific attention to high rate of fire.
I think supermachineguns will probably be electric, like the 25mm chaingun on the M2 Bradley AFV, only scaled down.
What I don't like, is that the art for the HVAR shows 2 barrels, like it uses a rotary barrel action. (I photoshopped one out for the pic I use.)
The thing is, IMO, high ROF is usually a waste, unless you are firing _at_ an airborne target, or _from_ an airborne target. Any other setting, you are usually better off with a heavier bullet at lower ROF. For example, a 5.56mm weapon at 850 RPM is usually more useful than a 9mm at 2500 RPM.
That might be below the mechanical resolution of SR4 though.
I agree with your reasoning regarding 1200, and I think thats going to be my cut-off point for furture conversions. I also agree on their being electric, as the lower reciprocating mass in such a design (simply a solnoid driven firing pin, if even that) makes sense for such a design.
One of my players made a really good point about that second barrel on the HVAR, and I liked his reasoning. Given that that weapon was designed from the ground up to be smart and fast firing, he reasoned that the second barrel is probobly used like the spare barrels we carry for LMG's in the millitary. In other words, once an onboard thermocouple senses the first barrel reaching a certain tempature, it waits for a breif lull in firing and flips over to the other barrel to give the other one time to cool.
Your spot on regarding the last bit, the only situation I've ever been in where we were taught that volume of fire makes a difference is responding to an ambush. In a situation like that, being able to have a few troops lay down some impressive suppressive fire could be pretty handy.