I was wondering about bullets with a lubalox coating, or whatever it is, the black ones ( winchesters supreme ballistic silver tips and so on..) I was told buy a guy at the store, the rifle sales guy, that you have to clean the bore of your rifle extremely well after use or it will rust it like crazy!?!?!?! He said the lubalox stuff attracts moisture! I was wondering if this is true, and if so how bad it actually is.....