[LeverGunFan]

I suggest that you place the gun in a good zipper case or hard case before you bring it into the house after hunting. Then the cold gun will not be in contact with the warm, more humid air in the house. Be sure that you place it into the case while outside in the cold dry air. Once the gun and case have warmed up to room temperature, you can take the gun out of the case if you need to; it may take several hours to warm up. For peace of mind you may want to take the action out of the stock now to check for any condensation, but if you prevent the cold gun from contacting warm humid air you shouldn't have to do it again.