O2BEBOWHUNTER:I HAVE TWO INLINES AND WHAT I FOUND TO BE THE BEST ANTI-RUST IS KNIGHT TEFLONE PATCHES FROM KNIGHT PRODUCTS.I MYSELF DON'T USE SOAP @ WATER I USE KNIGHT BLACKPOWDER SOLVENT IN A SPRAY CAN FOLLOWED BY A BRASS BORE BRUSH THEN A COUPLE OF DRY PATCHES AND THEN FOLLOWED BY A TEFLONE PATCH DOWN THE BARREL NEVER HAD ANY RUST AT ALL.WHAT YOU can try on the m/l you have that you can't seem to get clean is a product made by brownells called j@b bore compound and some 0000 steel wool on a cleaning rod should do the job on removeing any rust you have in that gun.