Originally Posted by jsthntn247
I'm having the same problem with mine with the exception that mine is shooting 1/4" groups. It's a target rifle that I trim brass to 2.007 and after firing the brass measures 2.017. I use a body die each firing and only bump shoulders .001 measured on a headspace gauge......
I can. Shoulder length is only part of the issue, it's probable your chamber is quite a bit larger in diameter than your size die so the body gets squeezed during sizing and that metal does go forward. That's when neck sizing is actually worth something.
Within reason, headspace should be meaningless to a competent handloader; make cases to fit the chamber and the ammo will be perfect.