I saw no pressure signs on the primer (no obvious cratering, edges still soft, etc), nor did I see
ejector slot burnishing on the case head.... AND you did not have sticky bolt lift.
I doubt you have a pressure problem.
Instead I suspect rough/possibly oblong-ish chamber-wall-to-case fit.
TEST: Polish the he$$ out of a loaded case -- make it absolutely shine and slicker than glass.
Might even rub a bit of nose oil on it before chambering.
Fire, and see if you still have an extraction issue.
Last edited by mehavey; January 23, 2013 at 05:13 PM.