I used some JB bore paste on the bore of my savage to smooth it up a little. Just put some on a patch and run down and back about 5-10 times(breech first better), then do itagain, and again, and again. I've heard anywhere from 100-500 strokes. I did 100, and still clean with it occasionally. Smoothed the bore ajust a little bit. I dont think you can hurt a bore with this stuff, as it is a very very mild abrasive. Old benchrest shooters swear by the stuff.