My experience with Brownings are with Superposeds, Citoris and BSS's. All were very susceptible to light rust in the chambers. Never had any particular problems with the outside or the bores. I've always believed it was because of the alloy of steel Browning specified plus the watery acid produced when firing plastic shells. I don't believe it was a problem before plastic shells came along. The cure I used was to shorten a Tico Tool into a chamber wiper(they're not much good for anything else). Using this after a day of shooting would prevent rusting 100%. Viginian's statement makes me think he has/had them in zipper cases. If so, this is a major mistake. Airproof cases can get hot then cold inside, producing moisture inside. JL
