I hope everybody knows Brasso, the brass polishing paste. Does it contain ammonia? How harmful is it for cases, and why? I have a couple of friends that polish their cases by turning them one by one on a caliber specific adapter for a home drill (on a stationary mount), and rubing some brasso with a piece of cloth. It is pretty fast, and the brass comes out really shiny. I don't do it myself (except for some really tarnished cases), but they never had any problem.
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