Ammunition that is stored in the boxes sold by the manufacturer is not dangerous in a fire. If ignited by intense heat, the brass or plastic cartridge will burst. … However, if ammunition is stored in a metal container such as a GI . 50 caliber ammo box, the ammunition can explode under the right conditions.

Are ammo cans bulletproof?

Metal ammo cans are not fire-proof, and in fact, are just the opposite. The metal conducts heat faster to the contents. Other than a container specifically designed to be “fire-resistant,” a wooden container is a better choice of fire protection than metal anything.

Should I store ammo in a gun safe?

Excessive moisture reacting with brass casings and primer can lead to corrosion and the ammo being rendered unsafe to fire. … Keeping your ammo stored in a gun safe uncovered for a few days can help extract excess moisture and prime it. Make sure there is no moisture in ammo cans before sealing and storing the ammo.