Originally Posted by Rocky_Raccoon

as far as underloading a gun, if it were a bolt action that had a box magazine you wouldnt underload it becuase its manually operated so its less prone to jamming, on the semi-auto and fully-auto guns such as Ak's and seemingly older weapons with high capacity magazines alot of time if you load it full (30rounds,50rounds or 75rounds) then the first shot will go off as intended(becuase you manually cocked it) but after the initial shot, the second and third shot seems to jam (at least with my personal experience with an AK-74) so i loaded 28rounds instead of the full 30 and this prevented the problem, its mainly because the spring is too tight and puts too much pressure on the top shells into the gun, but sometimes leaving the clips full for days,weeks, or months it will releive some of the pressure and the gun should fire flawlessly.