Found this 7.62x51 on a Ft. Hood anti-tank range a few years ago, still don't have a positive ID. HS: LC 68 nato. Does not have violent ejector, extractor, or firing pin indention in primer as if it had been fired in M60. Hole size in shoulder = #40 drill bit. Anybody seen one of these?Unk 2nd best.jpgUnk1.jpgUnk 7.62x51.jpg