So I bought this because I was reloading and the cases didn't fit in the gun. I know I changed the size of the case but they still don't work properly. Sometimes I hit the chamber, and sometimes it didn't even hit the gun. So I asked about it on one of the forums I use. I've had several users suggest I buy one of the Lee Factory Crimp Dies (FCD) and I wasn't sure at first. God I was wrong, this allowed me to save a huge amount of loaded ammo that I would otherwise have had to detach and start over. Not that someone who rebooted didn't. It's a real pain, but it really helps get rid of the need to do it. I have one for every caliber I load. If they ever break, I'll buy a new one the same day. Thank you LI