I was reading a piece in my sons Guns and Ammo the other day and the author mention that loading too long can cause feeding problems. He specifically mentioned that the ogive had to fall behind some reference point on the mag. Well no sh..tuf??? I did a build of an AR a few years ago and it's basically been sitting because it doesn't like my reloads. It'll shoot factory garbage but I don't buy ammo so it's just been sitting. I took a look at my reloads in the mag and sure enough, the ogive tags the lip of the mag as the bullet is shoved out. A lot of it has to do with my choice of bullet and penchant for seating .020 off the lands. In my long guns I favor the longer "missiles" like Bergers and SMK's. I may have to find another bullet but I think I can just re-seat what I have and shoot those up before I switch. Then again, maybe I just need to seat them deeper. Does anyone here have a MIC reading for .223 ammo that works in their AR?