[Paul Harm]

All of my hammerguns get rust in the left chamber and on the breech face just behind where the shell would hit or be. Not any on the right side. Not any of my hammerless guns. Three Parkers and two Remingtons do it so it's not a brand issue. I used to just run a bore snake through the barrels and then with a oiled patch run over the outside of the barrels and receiver and put them away. Now they're taken apart and the bores and breech face also oiled. I can't think of a reason why one let alone five different guns would do this. Any ideas ?