Practically all I use is range brass.I'm using range brass. Not sorted. It's not going into battery after i fire a round and manually. I've adjusted the crimp (maybe too much). I'll play with that. I have used the barrel to check the rounds but is not helping.Look like I need to get a case gauge ammo checker. I'm sure the various range brass is part of the problem after reading all the replies.
Thank You all for your ideas!
1). The best case gage you can buy, you already own. That would be the chamber of your pistol.
2). If you mentioned your load, I missed it. If your powder charge is too low, the pistol will not cycle reliably. I ran into that when my wife was a newbie. I boosted the load by 0.2 or 0.3 grains and problem solved.