Recently I have been having a problem with my 30 rounders. I load 10 rounds of ammo in them and when they get down to the last two rounds, they either don't load (stay in the mag chamber is empty), or get stuck (bolt severely gouges the round). I need help! The mags are new USGI with black followers. I've put very few rounds through them and hardly ever load them full (if at all!). Thanks in advance!

Replace black follower with new mil spec green follower.  That should solve the problem.