Let me add another comment here about primers. As I say, I've used most every brand and they all worked fine for me. But a few years ago I called Dillon tech support about some questions with a progressive press. Dillon told me flat out, "Do not use CCI primers. They are the sorriest made and least uniform in size. Almost all of the people who call us about primer feed problems are trying to use CCI. We tell them to change to anything else and 99% of the time their primer problems go away."

I've never tried to measure size, cup thickness etc and am only repeating what Dillon tech support told me. Mostly I use Federal and Winchester and both have been great.