I've been reloading 9mm for a while now, almost 25 years and this is the first I'm seeing this new issue.
Currently, I have a dillon carbide sizer, DAA powder funnel, Redding Comp Seating and Redding Comp Crimp. This has been serving me quite well over the past 20k rds. Today however, I opened a bag of range brass that I got off gunbroker and started to notice that most of the brass was not flaring enough to seat the bullet without shaving lead. The offenders were mostly Remington and Brass Blazer but also some Federal If I adjust the funnel flare down I start getting lots of brass shavings on the shell plate and some brass showing fatigue around the neck after the crimp.
Is there something I'm not thinking of that could be causing this?
Thanks in advace!