NorCal707
.22LR
Any of you also experiencing Rust/Pitting in the Gas Piston Bore on your 930 series shotguns? Nice of Mossberg to cheap out and not chrome the bore for the gas piston. I guess if one is anal and cleans their gun after every shooting session, it might be less of a problem. Other than that, what do you guys do to keep the problem at bay? I can get the surface rust off using a Scotchbrite pad but there's some pitting that's not going to go away.