Something I've been meaning to research and just haven't made time so I thought I'd ask and see what others here may know. Mag springs. I know of an armorer or two that say you absolutely should not keep a mag loaded to max for a long period - like keeping 5 - 10 loaded mags in your safe. Just in case you know... They say that because the spring will weaken & end up causing failure to feeds on the bottom end of the stack. Conversely I've heard mechanical engineers tout that that's not how a spring works. That, if it's a quality mag, then the spring should be made from and designed to hold up to the pressure of a full stack indefinitely. Finally what about springs wearing out? If I end up running 1000 loads (not rounds, full mag loads) through a mag will the spring weaken/deteriorate? Assuming that I keep em cleaned, don't store them in a bucket of swamp water or use them to drive nails etc etc. Opinions? Research? Anecdotal evidence?