Any trick to getting them to loosen up? These are brand new with a brand new gun. I loaded them/unloaded a couple times to try to loosen them up, but man are they stiff. It was nearly impossible to get the last few rounds to go in them
not sure if this is recomended or not but I load em and leave em loaded, some I save as new, and like to have lots of extras, at least 4 mags per gun. I have a sigsauer 226 that I had kept mags loaded since 1984, still functioned flawlessly and easy to load, just replaced the springs in 2007, cuz I was sending it back for the short trigger anyway. if its a quality mag/spring I think it should hold up well fully loaded for quite some time. if they get weak replace em.I had a leather worker make me a mag pouch for my shoulder rig that holds 3 mags to help even out the weight left to right, so I need 4 mags to stay balanced, but I rarely use that rig. bottom line the spring should lighten up a little with time, and may speed things along a little by leaving em fully loaded.
I do the same thing with my 45xd clips. Fill them up and leave them loaded for awhile will soften the spring a little.
i dont have the m&p .40, i do have a smith .40 and i leave mine loaded, had the gun for 4 or 5 years and the mags are always loaded and they always perform well.
