Lets say you have a concealed carry handgun and you keep hallow point ammo in there for self defense. You use FMJ's for practice but you keep the more expensive ammo for personal protection. Odds are you will not need to use the gun but you have it just in case. Is there a length of time where it is recommended to change out the ammo? If it had the same ammo for a very long time could something go wrong? Im still pretty new at this but would moisture or something like that cause problems over time? How long before you should switch it out?