Sieger,
I guess I should note that I only have used the household as counseled white vinegar(5%) bought at local grocery store. Feedstores have higher percentage vinegar but no experience there, or would want to, the household stuff works fine for gentle blue removal.
I guess I tried to say abrasion, perhaps with total brass type bore brush and of course, bore guild. Wear comes from the rod too. Steel brushes in steel bores gives me the willies; why put more damage onto the bore's surface?
I have seen good writeups on steelwhite by Brownell's, more expensive than some home brews, but more sophisticated.........technology usually costs money..........as in application of said materials where you want.
Once once has fussed and fummed all you going to with the red rust, remembering rust is rust whether what colour, most here have that fact one way or another; a good brushing patching with your favorite trick fluid of the day. The surface will be pretty clean from a lot of methods mentioned, so the Ballistol mentioned is a fine product for protection in my book as well.
Inappropriate applications of materials to surfaces always has hazards, unless you have some advanced technology on your side or...........age old methods passed down over the years.
Regards as usual,
Rick W.
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