I own a MP .40 full size. I'm starting to consider leaving my pistol loaded at night for protection. But, how long will the spring inside of the magazine last if its left compressed from a full clip? Does the spring maintain its strength for a long time, or will it start to wear out after a long period of leaving the mag. fully loaded? So, what I'm really wondering is if its bad to leave the clip always loaded, or is it okay and won't effect performance? Thanks for any help.