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I’d like to report that I’ve done 20 30 cal Carbine rounds and 20 30-06 rounds and they came out pretty dang good. I think the brass may be clad with a topical layer of corrosion resistant alloy because where the heavier spots were it is a dull color and where it was superficial corrosion it is shiny as a new round. I’m not certain on that part but I know aluminum on aircraft have a layer of alclad (pure aluminum I think) on top of the aluminum alloy below that layer. I’m going to replace media with new and see if it will polish all of it up. I borrowed a tumbler and have been using what was in there until now. I’ve been taking pics but as of yet I’m unable to post in here.
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