Does leaving your magazines loaded hurt the spring? (video)

Video Description:
YES. In here is just one great example: http://mcb-homis.com/magspring/ THIS IS WHAT I DO: I don’t keep a tight schedule. I do keep a couple mags for each weapon loaded all the time, and when I go to the range I bring them back empty and rotate them out with other mags that have been sitting empty. So none of my mags sit loaded for more than a few months. I also don’t load them up all the way. (I have brand new mags for some of my rifles that never get used. They are “extras”). I clean and lube my mags after firing too.