WHAT DOES RED ARMY STANDARD 7.62×39 MEAN?

Ronjai reported: Needed to make use of the higher grain bullet in my sub compact auto. The federal 147 grain bullet fed flawlessly and offered very accurate effects. Federal 9mm Ammo - 50 Rounds of 147 Grain JHP Ammunition Include assessment JW102282 said: I acquired a small amount (100 rounds) of the ammo strictly to utilize for personal defense.