I was perusing the ammo oracle again, and it struck me...Why aren't there any comprehensive data collections on the 7.62 NATO round? Specifically, I was looking for info on what rounds (surplus, in particular) fragment, and at what velocities. The vast majority of data that I have found uses the M14 as the test rifle. This is all well and good, but certainly outdated as the shorter barrel is really the "in" thing now. Does anyone have charts/data on external and terminal ballistics of various ball rounds and out of different barrel lengths?