WHAT DOES RED ARMY STANDARD 7.62×39 MEAN?

Once again, I feel that I would desire to run a minimum of 200 - 300 of such rounds in order to offer an improved evaluate. Even so,the fifty that I did examination fire operated from my Glock 26 Gen 4 with no troubles. I did notice that Together with the magazine fully loaded with these rounds against the 124 grain and many of the 115 grain which