just my opinion, I believe that we(humans)are the biggest error in shooting. Yes there are flaws in rifles, scopes, bullets and reloading equipment, but none as great as us. In the pics of coal it actually looks like bullet is out slightly(seating die?) on bullet length 0.014in difference could be product of pressure exerted on bullet? I’m not saying either is factual, I’m just making suggestion. I cast and handload a great number of bullets. I assure you they have no where near 0.014 tolerance, but at 1000 yards I can bang steal all day long with open sights. Granted that’s on 45-110 going 1450 FPS. More importantly than the measurements, how do they perform in your rifle? Are they grouping well, do they chrono well as a group.