Quote Originally Posted by Sturtle View Post
If being compressed ruined springs, car springs wouldn't last 25 years at a time.

I guess I just haven't had any of my guns long enough to ruin them by leaving the mags loaded. Mine have been loaded for going on three years now, and have yet to have a failure related to mags.
Ever look at the suspension on 70's Chrysler products, where you'd have to put 4 inch extended shackles on 'em just to get them to sit level(in the early 80's)?

Springs will take a set, and lose tension when placed under stress. This effect is less noticeable in helically wound springs (most magazine springs), and those that are lighter in rate, but longer and with greater preload.