I also keep mine loaded. What prompted my question was a problem with M1 Carbine magazine springs taking a set after being loaded for a long time. I discovered this when I started having problems with double feeds with some of the magazines. When I replaced the springs I noted that the new springs were considerably longer and had more power and the problem went away.
Edited by Geezer Ranger (12/09/15 01:27 PM)
I am allergic to stupidity. You can't fix Stupid, but you can occasionally head it off before it hurts someone.