Well, I did it. I was tapping out a rear sight off of a Henry Big Boy and put a pretty nice ding in the barrel when my punch slipped. Any thoughts on a good way to touch this up?
If it's a scratch on a blue bbl you can clean it up with a little steel wool and CLP. Once nice and smooth clean it with a good degreaser or even Dawn dish soap. Once clean and dry rub some cold blue into the area. It won't be perfect but better than a shiny scratch staring at ya.