There have been a few time i have opened my gun case when i got home to find my gun covered with condensation . But that was when i took it from the back of my pick up (10 deg or less ) into my home at 70 deg so i knew that was going to happen .Maybe i could have left in the garage all night and been good to go ??? But i just go ahead dry it off , empty it and clean i t and oil it , let it try out all night remove the oil from the inside of the barrel then reload in the morning . In the morning I put it back in bed my truck in a dry warm case and let it cool down slowly as i drive back up the mountains so nothing fogs up on me when i take it out .