I used the Dremel to cut just a wee bit if a bevel right where I saw the copper mark. Mine only did it when chambering slowly. If I was shooting rapid succession, the cartridge would jump right over it.
Just take your time & remember - the metal you're cutting is very hard. Cut slow, add a little oil to remove heat & chips, clean THOROUGHLY, inspect, chamber a few dummy rounds and then off to the range.

Also, if you ever change the barrel to a different action the chance of it lining up perfectly are pretty slim. Not that it's of any consequence. You just might have to cut another small bevel.