Despite 18 years of preaching and despite a very responsible (majority of time) 18 year old son, my son "accidentally" left his Rem 742 in his gun case:smack: and you know th rest of the story. I found a light, sandpaper like texture of rust on the receiver and barrel. I rubbed it well with gun cleaner and oil -Is there any technique that can be done to help- help short of rebluing?