For ten years all my magazines are fully loaded all the time. I just grab a handful and spare ammo and go to the range. I have never had a mag issue of any kind in any of my pistols.
I buy police used trade in mags and never an issue with them. they are the same ones I refer to without issues for ten years. I have some I purchased that show considerable wear, but always function perfectly. I must have a mix of different followers but I never cared.
The advice you are getting from the posters is excellent.
How often do you change front or rear springs in your car?
"Peace is that brief, glorious moment in history when everybody stands around reloading". Anonymous
Earp: Not everyone who knows you hates you.
DOC: I know it ain't always easy bein' my friend....but I'll BE THERE when you need me.