Hi! Got to shoot my Norinco M14 22" for the first time (i didnt want to touch it till M14 clinic but had a friend who wanted to shoot it so could say no) and it would not eject casings i shot around 20 round of PMC 147gn and Federal 150gn, not a single case got ejected, i could feel action cycle but, but it would always push cases back in to the chamber,and would not reset the trigger, didnt want to shoot anything hotter or heavier because of all those stories guns blowing up when shooting actual 308 thru it. Would you guys know what might be the problem? 