 The commercial Wolf Ammunition bullet weighs 276 grain, or 18 grams, a little more than double that of the normal 123 gr 7.62×39 mm round, and has only subsonic muzzle velocity.This reduced velocity does not produce a sonic boom, and also limits 
the muzzle energy and effective range of a weapon when compared to high velocity rounds normally used in (non-suppressed) rifles.The round has an optimistic effective lethal range of 400 to 530 meters and a maximum penetration of up to 10 mm of steel.