I agree, 1800 damage is too much, you'll see turbo-tap-ramming in valks and maud en masse. 1500 is more than enough, even with 10 ammo.

I've also heard that 0.5 is the fastest refire rate we can hope to see on an ammo based weapon. As I understand it: anything faster and the server can't keep track as well which could lead to ammo hacks. This is why the gatling and flechette aren't ammo based.