User blog comment:Griever0311/Ask A Marine Part По-русски/@comment-1260687-20100322235909

@Dolton: You're right, the length doesn't affect much more than accuracy and muzzle velocity, but with the way most military 5.56mm rounds are designed, it doesn't do much than increase penetration, which as you and me both know isn't always a good thing, considering the round in question.