How to Store Ammo Properly — Especially in Texas Heat and Humidity

If you're storing ammo in Texas, the elements are working against you. Here's how to keep your rounds reliable for years.

Keep it cool and dry.

Ammo degrades fastest from heat and moisture. In a Texas summer, garages and sheds can hit 130°F — that's enough to degrade primers and powder over time. Store your ammo indoors, in a climate-controlled space when possible.

Use an airtight container.

Military-surplus ammo cans with rubber gaskets are ideal. They seal out humidity and protect against temperature swings. For long-term storage, toss in a silica gel pack to absorb any moisture inside.

Avoid concrete floors.

Concrete draws moisture. Store cans on shelves or pallets to keep airflow underneath.

Watch the humidity.

Aim for 50–60% relative humidity or lower. A cheap hygrometer in your storage space tells you what you're dealing with. Above 70% consistently, you're risking corrosion on brass cases and primers.

Label everything.

Rotate stock by date — older ammo shoots first. Mark caliber, quantity, and purchase date so nothing sits forgotten.

Properly stored ammo can last 20+ years. A little attention now saves you real money down the road.