Example of moisture in a foam gun case.

[NorCalMikie]

I grabbed a few guns out of the safe to go shooting. I keep my gun cases in a closet, inside my air conditioned house. I pulled my 308 out of the safe and put a it in a hard case and went to the range. I put the cases on the bench, set up targets and started shooting. It was about 1/2 an hour until I pulled the 308 out of the case, which had been sitting in the sun. Be advised! The forum Boss has posted warnings about foam gun cases holding moisture. Here’s a pic of the gun when I pulled it out:
View attachment 1647498

Seen THAT with my own eyes!! In this case, it was a CHEEP Skin lined case. Water dripping off of the barrel!! WD 40 to the rescue!!
Hosed it down then got after it with lots of gun oil. Difference between outside air and inside case temp. Found one of my rifles with a rusty hand print on the barrel where I picked it up. A little very fine steel wool and oil took care of that.

 

[vonb]

Soft cases will ruin a gun too. I had a new Howa 1500 I had taken to the range for the first time. I got done shooting and put it in the soft case. It was in there for about 5 days when I got home and already had surface rust. The weather that day was about 82 and humidity was 70-80%.