Magazine loading long term
When our LE people transitioned over to Glock, they were told that they should remove their ammunition every month and rteload it. Not because of magazine problems but becaiuse the spring pressure would deform the ammunition causinfg failure to feed.
Liberty is never unalienable, it must be redeemed regularly with the blood of patriots, or it always vanishes.
Robert Heinlein, "Starship Troopers"