07-06-2019, 01:21 AM
You can learn a lot from the fired brass, take measurements and compare to the dimensional drawings. Also check if there is "Frosting" or chamber reamer marks that show up impressed in the brass = Rough chamber.
Take a black marking pen and coat a factory unfired round, bullet and case, then chamber and eject without firing (Do this at the range pointed in a safe direction). That can show if bullet is hitting lands (short chamber or bad factory ammo loaded long, bolt barrel mismatch ) or if it is the shoulder hitting, or the neck is tighter than it should be. That should get you more info about what's going on.
Take a black marking pen and coat a factory unfired round, bullet and case, then chamber and eject without firing (Do this at the range pointed in a safe direction). That can show if bullet is hitting lands (short chamber or bad factory ammo loaded long, bolt barrel mismatch ) or if it is the shoulder hitting, or the neck is tighter than it should be. That should get you more info about what's going on.