Ran across a crusty rusty .38 special at a gun show. Picked it up as I have been looking at giving a refinish a go. It has some mild rust pitting that ill be getting after tomorrow by sand blasting. What all is able to be used for filling? I read about a product made by duracoat for filling. Just curious if its really anything special specific for firearms. I plan on cerakoting and cant see why a light filler on non contact areas would hurt.
Thoughts.