03-07-2021, 03:09 AM
My opinion is that the feed ramp edges or corners mostly scratch the brass, at the neck and or the shoulder. A de-bur/polish of the sharp spots can fix the problem.
Chamber a new made dummy round or if safety permits a live round and eject w/o firing and inspect and evaluate. parallel marks about the width of the feed ramps are likely sharp corners that need work.
If the bullet is free from damage I would think case scaring would not make your groups much bigger, but you want to fix it to prolong case life.
Chamber a new made dummy round or if safety permits a live round and eject w/o firing and inspect and evaluate. parallel marks about the width of the feed ramps are likely sharp corners that need work.
If the bullet is free from damage I would think case scaring would not make your groups much bigger, but you want to fix it to prolong case life.