I agree with the safe/silica gel comments.
I use one of those plug in/rechargeable dehumidifiers from midway in my safe and have never had issues. Also, I keep any rifles I rarely or never shoot in those silicone socks that both pad and wick moisture away from them.
Lightly oiling before putting anything away is always a good idea, no matter what system you use.
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“When you want to kill a man, you must shoot for the heart and the Winchester is the best weapon."
-Ramon, A Fistful of Dollars
Originally Posted by BKinzey
The chuckleheaded tinfoil-asshatter racist (yes! that's a couple of names and a label!)