Time to take it apart and do some drawfiling and sandpaper polishing. Done carefully, you should be able to clean it up and after it's reblued it shouldn't be noticable. I just got to repair a nice Sako that somebody used a pipe wrench to try to remove the barrel. It was messed up pretty bad, but the only way to tell it now would be to compare the dimensions of an original to the one I worked on.