I am still working on reloading for a 5.7mm Johnson carbine. This is a 30 Carbine case necked down to 22. I bought the dies to form the cases from RCBS. The die set contains a 1) Forming die, 2) Trim Die, and 3) Full-length Sizer. Each of the three dies forms a part of the case shoulder and neck. I set up the dies according to the instructions I got from RCBS, but the resulting cases evidence head separation on first firing.
I know this means I am setting the shoulder too far back. What I need some guidance on is which die should I adjust first and how should I adjust the subsequent dies to get the shoulder dimension correct.
Thank you, in advance, for your constructive posts.
I know this means I am setting the shoulder too far back. What I need some guidance on is which die should I adjust first and how should I adjust the subsequent dies to get the shoulder dimension correct.
Thank you, in advance, for your constructive posts.