Got a chronograph. Not sure how that helps when you have a wildcat and no data ? As far as i know me and a friend are the only 2 made rifles out there . As for the rest , i sure do appreciate the info . I had to go back and look at notes . The first extractor marks were the very first sign. But the primer had also just started to flatten, just a little. Backed down from there. It's a big round so don't want to "lose" something I'll miss later !