Butch, have you read what Alex has done trying to solve the issue in the beginning, im sure you have. He tried having custom dies made to try more sizing at the base and so have others it didn't work thats why he opened up the back of the chamber.
Why not just use the correct reamer in the first place?
Like I said call some of these smiths up who have built a ton of these PRC's and ask them the correct fix.

Last edited by sherm_61; 09/30/23.