How often do you rotate or even shoot off your carry ammo? I wasn't in the habit of all out shooting it off, but I would rotate the rounds in the mag so the same round never was chamber more than a handful of times. Through some faulty ammo management the lady friend decided to load all my hornady critical defense up and blast away at some paper. Now this is all fine and dandy, normally I could just buy some more or in my case fire up the reloading press, but what really got me was two round in the mag had a failure to fire. Not the ammo was probably 3-5 months old, was in my daily carry pistol that serves as my nightstand gun, and honestly it is never empty unless I'm at the range shooting. Pulled the ammo apart and the powder was present, without moisture, the primer seemed to have some separation of the material that ignites the powder though.