I have been reloading for a couple years now but just getting started in the precision game. I recently got a new Redding full length bushing die and was wondering how much accuracy is affected between new brass and fired brass that has had the shoulder bumped .002 for the rifle it was fired in. Also, does it matter if 1x fired brass is fired from a different rifle initially as long as I bump the shoulder back to my chamber length minus .002 since I am full length sizing as well? Thanks!