With the correct load, bullet weight, barrel length and rifling twist, that puny little varmint round can still deliver considerable terminal effect at 500m.
...And proper shot shot placement. <_<
I wouldn't mind having even more ammo hand loading recipes possible, but they need to be harder to get hold of. Currently if you take Hand Loader, your damage gets a *substantial* boost from all the special ammo types you can make. Too easy. Really exotic ammo (9x19mm jacketed armor piercing rounds) ought to require points in Science to effectively manufacture.
That and no type of ammo should offer +damage% without drawbacks. Either you are putting more powder in the cartridge (+weaponDamage%), or you are making it expand and tumble better on soft targets which reduces its effect on hard ones (+targetDT). The .308 JSP, for example, is completely and utterly ludicrous with its +50% damage. Where, exactly, is this damage coming from? If you assume the standard .308 round is ball, then the JSP should do +damage% and +targetDT.