We have gone over this subject before, I use nothing but "Big .45" pad, you can get it from Brownells, and a little oil for such cleaning, it will not in anyway harm any blue surface but will remove all rust and fouling, NEVER use steel wool, and I never tried bronze wool and would not know where to get it....but the "Big .45" pad is a very course brillo pad, for lack of a better term, and I use it on all my Colt SAA, Lugers and trust it so much I use it on all my customers gun with never a problem...
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