WHAT DOES RED ARMY STANDARD 7.62×39 MEAN?

Ronjai explained: Needed to make use of the higher grain bullet in my sub compact auto. The federal 147 grain bullet fed flawlessly and offered incredibly accurate success. Federal 9mm Ammo - fifty Rounds of 147 Grain JHP Ammunition Insert critique JW102282 said: I bought a small quantity (100 rounds) of the ammo strictly to employ for personal def