How to Stat Ghost in the Shell Style Hypervelocity Ammunition

[Varyon]

Originally Posted by The_Ryujin

3 times the damage from boosted velocity means that the bullet is traveling 9 times faster!

GURPS firearm damage typically scales linearly with velocity, so 3x damage is 3x velocity (or, rather, given we were looking at starting with velocity, it’s that 3x velocity means 3x damage). And as I got that 3x figure starting from a weapon that has a muzzle velocity of 350 m/s, you’d want to set your damage based on that; as 350 is the typical 9mm velocity, and 2d+2 pi is, IIRC, the typical 9mm damage, you’d triple that, for an average of 27 pi - which is 8d-1 pi.

That’s still pretty crazy; I’d expect a weapon that is designed for it would have a lot of weight and probably a long bolt; if dude’s SMG had been using such monstrous rounds, it probably would have burst apart during the first salvo, rather than being able to at least fire a couple more magazines of normal ammo (but the way it treated cover implied it might have still been using HV).