I keep mine in it's original box with the plastic tray if possible, unless the box is damaged. The little silica packs that absorb moisture come with almost everything we buy so i recycle those and keep them in the area where i store ammo. I also keep 1 in each gun case to help prevent rust.

Ammo should be stored in airtight containers and labeled clearly. Never store ammunition in your vehicle long-term, or anywhere it could be exposed to heat cycling or humidity. Most people recommend storing firearms and ammunition in separate, secure locations.

ing to SAAMI(Sporting Arms and Ammunition Manufacturers' Institute) standards, extremely high temperatures (over 150° F) should be avoided. The ideal storage temperatures is between 55°F and 85°F. In addition to avoiding high temperatures, extreme cold can also affect your ammunition (although it's less likely).

Basically, a cool dry place is what you seek. If properly stored, modern ammo will last for hundreds of years at least. Things that shorten the lifespan the most are heat and moisture, but there are other factors as well. Use a mil surplus or new mil spec ammo can, with a rubber gasket.

A humidity- and temperature-controlled vault room or gun safe can be an appropriate place to store ammunition, particularly if it's the only place in your home that is suitable for storage from a temperature and humidity standpoint.

We said above that the cardboard or foam factory ammo packaging can potentially absorb water from the air, but we still recommend ammo be stored in its factory packaging where possible (inside a larger, airtight container, of course), and not just because it makes it easier to organize and store.

Ammunition isn't a perishable good - if stored correctly, it can last almost indefinitely. Whether it was stored correctly or not is another matter. Ammunition isn't like the still-edible 5000-year-old honey found in Egyptian tombs; ready to eat and spread on toast.