Shehane should put you in the winners circle Willow.. Not convinced blowing out side walls at shoulder would result in easier extraction compared to straight 284, I’ve never had an extraction issue in many thousands of rounds, apart from clickers but that’s due to FL Die not matching chamber/reamer correctly. Never had a loose primer either with lots of brass on mid teen firings by then the barrels toast, but I do run all barrels below 2800fps.. I think it comes down more to people’s ability to tune there rifle well and know when to start and stop a string, be hard to tell the difference between a well tuned 284, Walker or Shehane..I plan on sticking with the Shehane over the straight 284. Why? I have found blowing the sidewalls out results in easier case extraction, and I can run the Shehane at the upper 284 node and it is VERY easy on primer pockets. I can push 184 hybrids at a very comfortable 2840fps and not trash the brass. If I want to run over 2900fps, then I'll build a SAUM.
my shehane runs 2900.My Shelby Cobra runs in the 2840's with the 180 Bergers just fine.
7 Shehane to you.
View attachment 1262922View attachment 1262922View attachment 1262922View attachment 1262922my shehane runs 2900.My Shelby Cobra runs in the 2840's with the 180 Bergers just fine.
7 Shehane to you.