Storing ammunition safely and effectively is essential for maintaining its long-term reliability. While ammunition is engineered to be stable and durable, certain storage habits can unintentionally shorten its lifespan or affect its overall condition. Understanding the most common mistakes helps gun owners avoid unnecessary wear and ensure their ammunition remains in good shape for years to come. Here are the key missteps to avoid and the best practices to follow instead.
One of the most frequent mistakes is storing ammunition in areas with high or fluctuating humidity. Moisture is one of the leading causes of corrosion on metal surfaces. Even slight exposure over long periods can lead to discoloration or weakened components. Spaces like basements, garages, and outdoor buildings often experience elevated humidity. While these areas may seem convenient, they are not ideal for long-term ammo storage unless they are climate-controlled. The better option is an indoor location with consistent humidity, such as a closet, cabinet, or secure storage room.
Another common issue is exposure to excessive heat or dramatic temperature changes. Leaving ammunition in vehicles, sheds, or uninsulated attics subjects it to extreme heat during certain times of the year. High temperatures can affect the chemical stability of the powder inside each cartridge. Sudden temperature fluctuations may also impact the seal between the casing and the bullet. To prevent this, ammunition should be stored at steady, moderate temperatures. Indoor storage away from direct sunlight or heat sources works best.
Improper containers also contribute to premature wear. Some gun owners use cardboard boxes or thin plastic containers that do not provide adequate protection against moisture or dust. Over time, cardboard can absorb humidity and transfer that moisture to the ammunition. Thin plastic containers may not form a proper seal. The solution is to use durable storage options such as steel ammo cans with rubber-gasket lids or heavy-duty polymer containers designed for airtight closure. These containers help maintain stable conditions and shield ammunition from environmental changes.
A related mistake is failing to use desiccant packs. Even in sealed containers, small amounts of residual moisture can remain. Desiccant packs absorb that moisture, helping create a dry, stable micro-environment. Many gun owners overlook this simple addition, but including a silica gel or desiccant pouch inside each container significantly improves long-term storage conditions.
A less obvious, but important mistake is frequent unnecessary handling. Each time a container is opened, new air—and potentially moisture—is introduced. Over time, this repeated exposure can affect the ammunition stored inside. To reduce this, consider organizing ammo into multiple smaller containers rather than relying on one large one. This way, you only open what you need, while the rest remains sealed.
Many gun owners also overlook proper labeling and organization. Without clear labels indicating the caliber, brand, and date of purchase, it becomes difficult to rotate stock. Ammo might sit longer than intended simply because it’s hidden behind newer batches. By labeling each container and organizing them by caliber, you make it easier to track what you have and what should be used first. Rotation helps ensure older ammunition is used in a timely manner while newer supplies remain stored.
Another mistake to avoid is storing ammunition near cleaning chemicals, oils, or solvents. These substances can release fumes that may affect primers or powders over extended periods. Keeping ammunition in a separate area from chemicals helps protect its integrity.
Lastly, some owners neglect routine inspections. A simple visual check for corrosion, dents, or discoloration provides early warning signs that something may be affecting your storage environment. Regular inspections help catch issues before they become significant.
Avoiding these common mistakes ensures your ammunition remains in excellent condition. With proper storage practices—consistent temperature, low humidity, secure containers, good organization, and minimal exposure—your supply stays reliable, well-preserved, and ready for safe use whenever needed.
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