I purchased about 1000 rounds of once fired, cleaned, brass online a few months ago and just got around to reloading some of them.
They all appear to have some kind of crimping or indents on the mouth. I have never seen this before. Maybe from a puller or something? Mixed head stamps.
But they all seem to be non usable because it pushes out burs,for the lack of a better word, after the sizing die. I currently use a Lee sizer, but I have tried my Dillon die as well with same results.
I can get all the way through the reloading process but the necks all feel like there is a rough lip remaining. They do still properly fit in a case gauge.
I first couldn't figure out what the cause was and thought it was a die issue. But after swapping out everything and then running different brass through they all came out fine, so its definitely the brass. I even tried crimping down way to much to see if it smooths out but they don't. Using a chamfer didn't make a difference either. The pic makes it look like there is lip on the mouth but it feels smooth to the neck.
I use a Dillon 650 if it matters. Any thoughts of how to save the brass?