I like the thread that Tattedupboy provided, yet I too have a few thoughts, feel free to let me know if I am off base. (Easy now. lol)
I like the idea of a sock or some type of protective material, towel, or paper, or something which will absorb the moisture. A good, hard-sided, well-insulated case works well, too to keep out most of the moisture if the foam is made to absorb it. If not, wrap your firearm in a sheet of newspaper then place it inside the case.
We have somewhat of an opposite problem here in the desert. The tiny bit of moisture we get yearly isn't nearly enough to worry about affecting the metals as much as it might in wetter parts of the country. Often,we are more concerned with the dryness. Our toys need to be oiled lest they dry out. The dryness preserves most things well, but is not good for smoothness or ease of the working parts or the mechanics in machinery. (I'm not sure how to say that correctly.).
When it's cold outside it can still be warm in the car. Thinking back to a few cold winters, don't we use work extension lights to keep the engine blocks warm in our cars while they rest for the night? As well, my safe has a light to dissipate the moisture and provide a tiny bit of heat.
So, I'm thinking that a coffee cup warmer, the type that we plug into the aux or cigarette lighter port in the dash board, would keep things cozy.
Or, how about a
Link Removed of some sort? These can last +/-8 hours and can be bought online or at Bass Pro Shops and the like.
I like to use good shooting gloves because the feel of the cold hard steel of a pistol, even with wood or rubber grips, is not for me, unless I would ever need it for self-defense, that is. I like to practice with my toys with minimum discomfort because our friend, Arthur Itis, visits all too often. :wink:

fftopic:? TMI? Sorry. :lol: