A bullets maximum velocity is RIGHT out of the barrel, but most will chorongraph the speed of bullets 5-15 feet after the barrel.
Like ECS said, bullets just don't travel flat.
Gravity still plays a part, it just doesn't have as long to play that part.
Also, why the hell are you guys talking about the 30-30 round? Does this game actually have a firearm that shoots 30-30?
Cool, all the modern weapons, but they just had to mix in a lever action 30-30, sweet!
I'll be perfectly honest, my win94 30-30 wouldn't actually be that bad of a CQB rifle, IMO the cowboys had it good if they had a lever action 30-30 with them back in the day.
Edited to say: after bullet leaves barrel, it no longer has any compression for powder to burn against, so there's no way it can GAIN speed after leaving muzzle.