[GOP_Party_Animal]

Would you store magazines in a loaded condition, or would that weaken the spring?

[Gaffer]

I keep a couple three mags fully loaded and ready.....I swap out the loaded vs. unloaded on a few-week timetable.

[jboot]

I've heard that it does, and also that it doesn't. Common sense dictates that any spring kept under continuous compression will eventually weaken. How long that takes is subject to vaguaries of metallurgy that I know little about.

If it were me, I'd keep half my mags loaded at any given time and cycle them out of service every few months.

[atomic_dog]

Go ahead and store them loaded. What weakens springs is cycling them, loading them and unloading them.