I hunted this afternoon at the GSL and now my Remington 1100 has some spots on it from the salt spray. When I got it out of it's case at home to clean, the barrel had rust spots and lots of salt on it. It cleaned up pretty well, but now it has spots on some places on the barrel and receiver. I tried using WD-40 and Hoppies #9, but nothing took them out. Any suggestions on what would restore the blueing to its original, spot-free luster?