Originally Posted by
super_hunt54
WV, higher humidity areas succumb to "sweating" problems with temperature variations. I've brought rifles in after being out in the cold (and around here it gets freaking COLD!) and could sit there and watch the water bead up on my barrel. It's also a problem if you are running a humidifier in the house.
My wife rusted the heck out of a M96 by bringing it inside on a very cold day and leaving it in the case. I pulled it out of the case the same day and we were able to restore its original state with lots of elbow grease and oil. If left any longer than that the effects would most likely have been tragic.
I am currently purchasing some very nicely figured MINT stocks that came off of a 760. The gun was purchased and stored in the cab of a truck for an entire season. Although the donor rifle was barely used the barrel is completely rust pitted.
I would not discount the effects of condensation on a firearm.