I've been reading that the case they came in from Glock isn't good because the foam can hold moisture. I don't want to have a big gun safe for two to four pistols. They will be shot at least once every 4-6 weeks max. What do you guys suggest? Along those lines, I'm trying to build up a reserve of ammo. The house is air conditioned and heated year round so there is very little variation of temperature or humidity. Is locked ammo boxes or a locked file cabinet good enough?