Ya' need to get yourself the 7.62x39! I handload and built up some rounds in a range of about 2 grains below and 2 grains above a specified load and ran them up and down where I shoot. I found the one it liked as it gave be a 3/8" three shot group at 100 yds. I stopped when it got there! It's got a little scope on it (2.5x8 Leopold, I think) that works well with my old eyes.