WHAT DOES RED ARMY STANDARD 7.62×39 MEAN?

Ronjai claimed: Had to utilize the higher grain bullet in my sub compact auto. The federal 147 grain bullet fed flawlessly and furnished very accurate benefits. Federal 9mm Ammo - 50 Rounds of 147 Grain JHP Ammunition Increase assessment JW102282 reported: I ordered a small total (a hundred rounds) of this ammo strictly to employ for personal defen