I agfree with Colorado4QWheel. I are loading on my 550 because 1994 and that features many thousand CCI primers. I have not had a challenge with them not going in simple. I've talked While using the Dillon people today over and over, but in no way about primer challenges, since https://federal210primers100count59270.dbblog.net/5177619/top-federal-primers-ammunition-secrets