For the non-gun people in here that is an absolute chonker of a bullet.
The .556 (very common AR round) is 112. 9mm common in handguns is around 115.
422 grain = 27.35 grams / 0.9646 ounces.
The .556 (very common AR round) is 112. 9mm common in handguns is around 115.
422 grain = 27.35 grams / 0.9646 ounces.
Do you mean 5.56mm, the NATO standard small arms round iirc? i.e. as an imperial measurement it'd be about the same as a .22, not .556.