Guys this may not be the proper place,but. anyone know how the 7.62 MK316 Mod 0 is packaged? how is it marked ? I have some FED GMM with the box Marked as 7.62x51, it is a FED GMM box and says it is 175 gr HPBT, case marked FC 13 non crimped primer and boxer primed . the little I have tried shoots about like M118LR, but was in a hurry. any info?