This post sums it up - I think!
However - Mas Ayoob claims he empties and rotates carry mags when changing to/from standard/daylight saving time. So...Cheers.
Originally Posted by NEOH212
Using them wears the spring and to a lesser extent, everything else.
Leaving them loaded doesn't hurt anything. I've left mags loaded for years and never had one issue when I used them after.
If your worried about it, leave one less round in your mags or rotate them on a regular basis. I don't see any need to do that though.
Tuica: NRA Certified Instructor; Oregon CHL Instructor; GMG2 - US Navy 1976-1980. USS Coral Sea, 1977-1980. Forward Deployed - The Gulf.