I don't believe the chamber rust has anything to do with sweat or salt from my hands. I don't stand around holding the shells in a sweaty palm. I have removed AA cases from the chamber immediately after firing and found them to be dripping wet. I believe a watery acid is formed from the heat and pressure of firing the plastic(probably poly-vinyl-chloride) shells. Paper shells, IME, do not do this. Most other guns, Remington for one, are much slower to rust in the chamber while firing the same shells. That's why the alloy steel is suspect. Browning finally chromes their chambers, I understand. JL
