TexasCHLforum.com

In the past I would shoot off my carry ammo once a month (whatever was in the primary mag) then two months, three, four and on. Now I change it out every six months and practice with ball 4-5 times a month. I change out the chambered round once every 2-3 weeks just encase I get a round with heavy bullet set back. As for the ammo not firing? I just shot off three mags of 9mm that had been sitting in my Ruger P95 that has been my carry rounds(car carry backup) for over a year and a half and all 45 rounds fired in the three mags. As long as you don't get oils or solvents around the primer they should be fine for years. It is just a good idea to change carry ammo out every so often and make sure you switch out the chambered round even more often imo.