I have a (new) rifle that must have a slightly large chamber. I'm skinning a bit of brass off the cases when I size them after firing, they aren't bulging per se, but just expanding a few thousandths overall - but very uniformly. Would I be better off just trimming for length and not sizing them? Factory rounds seem to have a nice solid fit in the chamber, but I've never seen a sizing die skin a case this much. Perhaps it's just the crappy RCBS sizing die?