From the post "Minor Reloading Mishap"
Glad to hear that you are alright. The one question I have is that you stated that the Cheddite primers are a little oversize. I don't know what primers you use, but Cheddite 209 and Winchester 209 are compatable are far as size and mechanics for reloading. Cheddite and Winchester both have a smaller diameter step of .240-.241 and then to the larger seating area of .244-.245. CCI .209 and Remington 209 STS are smooth and don't have a step, they both mike .241 front to rear.
The only primers that I know of that are compatable is the Cheddite 209 and Winchester 209. CCI 209 seem to be a milder primer, but the difference just changing between CCI 209 and Remington 209 can be 1,000 psi or greater.