Re: molly bullets and rust ?
I have run moly in about 8 barrels since 1997 and have not had one rust problem. I always leave my barrels with a good layer of solvent in them (not gun oil) and have never seen any sign of a problem, even when viewing the inside with a bore scope.
Some of the so-called tests that came up with this finding that I have read in the past have been very slap-dash and the results are meaningless. I have not heard a credible source supporting the moly-rust position.