I'm getting ready to do a primer pocket test in the next week or so (weather permitting). A little different type test.
Purpose of test is to see if there is any difference between cases that have a .127 pocket and cases having a .130 pocket depth.
All primers will be seated .003 -.005 below case head. I am using -14, -15, and -16 LC 308 cases. All cases are full length sized with neck sized bushing using the RCBS Match Master dies. Sholder bump is
.002-.004. All cases trimmed to 2.005. Powder is IMR 4064, primers are CCI 34, and bullets are 175 SMK AND 168 SMK. 70 rounds each bullet weight. Powder charges will increase from 42.5 to max of 45.0 at .5gr increments. Bullet seated depth per Sierra reccomended depth. COAL is 2.805-2.810.These cases are new, never fired. Gun is a new just broke in Bergara HMR PRO
I'm curious to see differences (if any). Expecting overpressures at some point and primer issues also. Testing limits of applicability. We'll see.....
Will report back.