Anything heavier at that distance would have made him an amputee.
Most common ammo is 5.56 55gr FMJ.
I have no clue what he actually shot.
I don’t own an AR or an AK.
I can reload 5.56
I owned both before my TBA. I have AK ammo in HP and ball; the AR ammo is all ball and I haven’t seen any in HP>