I just got a new rifle. Shot some rounds through it and found a small scratch that starts at the body shoulder junction thats about 3/8 in long and not very deep. I called the factory and he said send it back and they would fix it and i think he said they would replace the cases also. It would only be 3 weeks after they received it. I asked if i polished it my self and didn't fix it if it would void the warranty and he said he didn't think so. So what would be the best way for me to try and get this burr out. I search the site and found some stuff on chamber hones and scotchbrite pads sandpaper. Just a little nervous. Thank for your time.