I acquired a 98 mauser that had a some what crusty looking barrel. It shot respectable but looked pitted and rough. I swabbed it with kroil and let it sit a couple of days brushed it out swabbed it again repeating for a week or two. It now looks much much better. You really have to look at the grooves at just the right angle to a bright light to see any roughness at all and the bore is actually bright and shinny. It shoot rings around my friends various surplus rifles. I was originally thinking rebarrel but not anymore.
