How to Store Ammo: Keep It Reliable for Years
February 8, 2026 · AmmoBin.com
Properly stored ammunition stays reliable for decades. The enemies are heat, humidity, and direct sunlight. Here's how to store ammo the right way.
The three rules
- Cool: avoid heat cycling (no hot attics or car trunks)
- Dry: humidity corrodes cases and primers — this is the big one
- Dark: keep ammo out of direct sunlight and in original packaging
Best containers
Military-style ammo cans with a good rubber gasket are ideal; add silica-gel desiccant packs to control humidity. Label cans with caliber and date.
Does ammo go bad?
Quality factory ammo stored cool and dry can remain reliable for decades. Brass-cased ammo resists corrosion best — learn why in our brass vs steel guide. Buying in bulk only pays off if it stays good, so storage and bulk buying go hand in hand.
Frequently asked questions
Does ammo expire?
There's no hard expiration date. Stored cool and dry, quality factory ammo can stay reliable for decades.
What's the best way to store ammo?
In sealed ammo cans with desiccant, kept cool, dry, and out of sunlight, in original packaging labeled with caliber and date.
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