Hell, Dan I wouldn't put it past us missing the primer diameter a couple tenths, while setting stuff up, a one tenth, off set on a lathe gives you twice that on a diameter.
A half a thousands is easy to come and go, lets see how the next batch runs for consistency before we worry about the consistency of the material.
I could be the error we are seeing, I need to run of a batch with no changes in offsets, then we can end the speculation and start fixin stuff!
We are close, and close is good !
