Will Handloaded Ammo Maintain Accuracy During Extended Storage?

Reloading and Storage Considerations

When storing handloaded ammo, it’s essential to consider the potential for primer degradation and powder separation. To mitigate this, store the loaded rounds in a cool, dry place with minimal exposure to light. A storage condition of 60-70°F (15-21°C) and 30-50% relative humidity is recommended. Store the ammo in an airtight container, such as a plastic or metal can, to protect it from environmental factors.

Factory-Loaded Ammo Comparison

In comparison, factory-loaded ammo is often formulated with preservatives and stabilizers to prolong shelf life. These additives can help prevent primer degradation and powder separation, making factory-loaded ammo more resistant to storage-related accuracy issues. However, the shelf life of factory-loaded ammo can still be affected by environmental factors, and it’s essential to store it in a cool, dry place.

Powder Separation and Primer Degradation

Powder separation occurs when the powder settles to the bottom of the cartridge case, potentially affecting accuracy. To prevent powder separation, it’s recommended to use a powder that is less prone to settling, such as a spherical or cylindrical powder. Primer degradation can occur when the primer is exposed to heat, light, or moisture, leading to a loss of accuracy. To prevent primer degradation, store the ammo in a cool, dry place and avoid exposing it to direct sunlight.