My grandpa died back in December, leaving my brother and me his rifles. Well, my grandma just got around to bringing them down, they're in need of some deep cleaning. But she also brought any ammo that she had up there. Now I have a lot of 270, 9mm and 20 gauge shells that I don't know what to do with. A lot of the metal on the shotgun shells and 9mm are corroded. I know I can't just throw them away. Any one know a solution?