Originally Posted by jim goose
My experience is different. I had two 10 rd mags for my g19 for the past 10 yrs. One was kept fully loaded at all times, I switched every yr or so. Those mags were probably only used 10 times or so at the range, so they were not cycled too much. Now the last round in both mags ftf's.
If you load a new mag and leave it there for 10 yrs maybe its fine, but any kind of cycling and you're better of replacing springs every 5 yrs or so.
The neutered 10 round Glock mags were always kind of twitchy for me. Their design is the problem in my opinion. Standard capacity mags work much better and only require an occasional spring change upon much use. Going to the extra power springs seems to help on occasion when I go to stronger recoil springs and they may last longer as well.