Tonight I was setting the shoulder back on my once fired Fed 308 cases.I believe they started out at 1.622 new and grew from 1.625 to 1.627. This is my first time doing this so I figured that I would bump the shoulder to 1.625. Once I set up the die I figured that all would come out at the same length. As I was adjusting the die some actually got longer and after further adjustment I would say that 90% came out at the desired length and the others were off .0005 to .001. The press is a coax and this is for a 308. Just not sure why the set die doesn't set all the cases the same.