When I pick the cases off the floor the are missing. Haven't had any jam in the gun. But loose primer pockets is a safety issue for me. Usually means the brass is used too much and weak and should be tossed out. I still occasionally shoot a few here and there. But I don't think I would buy it again. I'd rather pay a little more for more reliable ammo. There are plenty of people who sell reloads (they are licensed of course) and have great reviews, right here in Michigan. There prices were good too, I'll see if I can find their info.