Any thoughts on if extra power recoil springs (say 18.5lb instead of the factory 16lb) would contribute to bullet set back during chambering? I think part of a problem I had recently will failure to feed may have been due to the bullet being set back into the case, slowing things up enough to not chamber fully. I checked when I got back and sure enough, the rounds were getting shorter. Not a warm and fuzzy thought. Going back to the factory springs seems to help...some. I am setting here looking at a new factory Speer 230fmj round that started out at a respectable 1.260" and is now at 1.205"! I'm also wondering if when the ramp gets really dirty, this adds to the problem. Thanks.