We all know your aren't supposed to keep your mags loaded long term to avoid spring memory. However that isn't always possible. Lots of people keep a few mags loaded for home defense. So what happens after years of storage next to your bed? I tested it out. This week I will have the conclusion. I loaded two sig P226 9mm magazines over a year ago and set them to the side in my safe. One magazine had a WOLF XP 10% Spring. The other mag had the OEM spring. Which one do you think came out on top??? Any guesses? I already know the answer because the difference is so incredible, that it is easily felt by the finger but this week I will use a scale to get a true weight and report the difference in each before and after long term compression.