DON'T use anything but a BIG 45 pad, google it, $6.oo free shipping, best damn thing you can use to remove rust w/o removing ANY bluing, follow the directions( little oil & light scrub)......... buntingmiester
This ^^^ or you can go to Wal-Mart and get the Scotch Brite version for $2.00; best thing I've ever used.