Quick Answer: What Is the Best Way to Store Ammo?
Avoid storing ammunition long-term in cardboard boxes or loose factory packaging, as these materials can absorb moisture and provide little protection against environmental damage. The best way to store ammunition is in a cool, dry location using high-quality ammo cans, ammo boxes or ammo crates. Keep ammo away from moisture, extreme temperatures, direct sunlight, and humidity. For maximum protection, use desiccant packs inside airtight storage containers to prevent corrosion and extend ammunition shelf life.
Why Proper Ammo Storage Matters
Moisture and humid storage conditions can lead to corrosion, misfires, degraded primers and reduced performance. Whether you’re storing a few boxes of ammunition or building a large stockpile, proper ammo storage protects your investment and ensures your rounds perform when you need them most. This comprehensive ammo storage guide covers everything from basic storage principles to long-term ammunition preservation best practices.
Ammo Storage Basics
Many shooters assume ammunition storage is simple—just place it somewhere safe and forget about it. However, long-term ammo storage requires attention to environmental factors that can significantly affect ammunition performance and longevity.
Keep Your Ammunition Dry
Moisture is one of the biggest threats to stored ammunition. Excess humidity can cause brass casings to corrode, damage primers, and reduce overall reliability.
Avoid Storing Ammo In:
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Damp basements without humidity control
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Areas prone to water leaks or flooding
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Garages with excessive moisture
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Direct contact with concrete floors
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Locations with frequent temperature fluctuations
For optimal ammunition preservation, maintain a relative humidity level between 30% and 50%.
How Temperature Affects Ammunition
Extreme heat and freezing temperatures can negatively impact ammunition performance over time. Consistent temperatures are ideal for preserving powder stability and maintaining cartridge integrity.
Best Temperature Conditions for Ammo Storage
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Cool, climate-controlled environments
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Consistent temperatures year-round
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Protection from direct sunlight
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Avoidance of attics, sheds, and vehicle storage
While modern ammunition is durable, prolonged exposure to harsh environmental conditions can shorten its lifespan.
Best Ammo Storage Solutions
Choosing the right ammunition storage container is essential for protecting your rounds from moisture, dust, and physical damage.
Ammo Boxes
Ammo boxes provide organized, caliber-specific storage while protecting cartridges from everyday wear and tear.
Features to Look for in an Ammo Box
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Caliber-specific sizing
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Durable impact-resistant construction
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Full length mechanical hinge
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Secure latching system
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Stackable design
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Easy labeling and identification
Ammo boxes are ideal for keeping ammunition organized and separated by caliber while maximizing storage efficiency.
Ammo Cans
Ammo cans are one of the most trusted and effective ammunition storage solutions available. They offer superior protection against moisture and environmental contaminants.
Features to Look for in an Ammo Can
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Airtight seal with rubber O-Ring on plastic cans and on metal cans rubber gaskets work fine
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Heavy-duty construction
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Comfortable carrying handles
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Stackable design
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Rust-resistant materials
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Multiple lock tabs for security
Types of Ammo Cans
Plastic Ammo Cans
Pro’s - Lightweight, durable, and easy to transport. Ideal for range trips and general ammunition storage.
Con’s – Weight limits and gasket style seals don’t work well
Metal Ammo Cans
Pro’s - Traditional storage containers known for strength and reliability.
Con’s – Much heavier than plastic cans, sharp corners to catch on and non comfortable handles.
Both plastic and metal ammo cans provide excellent storage solutions when equipped with a quality airtight seal.
Gun Safes and Ammo Cabinets
For firearm owners storing large amounts of ammunition, gun safes and dedicated storage cabinets provide additional security and organization.
Benefits of Using a Gun Safe for Ammo Storage
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Increased theft protection
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Organized storage for multiple calibers
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Space for ammo cans and ammo boxes
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Convenient access when needed
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Ideal for dedicated gun rooms
When storing ammunition in a safe or cabinet, keep containers elevated off concrete floors to minimize moisture exposure.
Best Practices for Long-Term Ammo Storage
Following proper storage procedures can dramatically increase ammunition lifespan and reliability.
Use Desiccant Packs
Desiccant packs absorb excess moisture and help maintain ideal humidity levels inside storage containers.
Benefits of Desiccants
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Prevent corrosion and rust
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Reduce humidity inside ammo cans
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Improve long-term ammunition preservation
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Affordable and easy to replace
Place at least one desiccant pack inside every ammo can or ammo box for optimal protection.
Maintain an Airtight Seal
Airtight storage is one of the most important factors in preserving ammunition.
Quality plastic ammo cans should feature a O-Ring seal that creates a moisture-resistant seal. Regularly inspect seals for wear and replace damaged seals as needed.
An airtight environment helps prevent humidity from reaching your ammunition and significantly extends storage life.
Rotate Your Ammunition Inventory
Use a first-in, first-out (FIFO) inventory system to ensure older ammunition gets used before newer purchases.
Benefits include:
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Reduced risk of aging inventory
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Better ammunition management
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Improved reliability
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Easier stockpile tracking
Label containers with purchase dates and caliber information to simplify rotation.
Why Choose MTM for Ammo Storage?
For decades, MTM has been a trusted name in ammunition storage solutions. Manufactured in the USA, MTM ammo boxes, ammo cans and ammo crates are designed to provide superior protection, organization, and durability for shooters, reloaders, hunters, and firearm enthusiasts.
Why MTM Ammo Boxes Stand Out
MTM ammo boxes are engineered to fit specific calibers while protecting ammunition from impact, dust, and moisture. Available in multiple capacities ranging from 10 to 200 rounds, they feature durable construction, secure latches, and stackable designs that maximize storage efficiency.
Benefits include:
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Caliber-specific organization
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Heavy-duty construction
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Secure snap-lock closures
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Stackable storage design
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Color-coded options for quick identification
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Available in 80 sizes of ammo boxes
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Made in the USA
Why MTM Ammo Cans and Ammo Crtaes Are Built for Long-Term Storage
MTM ammo cans and crates combine rugged durability with lightweight performance. Featuring tongue and groove O-Ring sealed lids and heavy-duty polymer construction, they offer protection comparable to traditional metal ammo cans without the added weight and sharp edges.
Key features include:
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Dust and water resistant O-Ring seals
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Durable comfortable carry handles
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Stackable design
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Lightweight polymer construction
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Available in 6 sizes of ammo cans and 7 sizes of Ammo Crates
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Made in the USA
Whether you’re storing a few hundred rounds or building a long-term ammunition reserve, MTM ammo cans and ammo boxes provide dependable protection for years of use.
Final Thoughts on Ammo Storage
Proper ammunition storage is essential for maintaining reliability, safety, and performance. By storing ammo in a cool, dry environment, using airtight ammo cans or ammo boxes, adding desiccant packs, and rotating inventory regularly, you can significantly extend the lifespan of your ammunition.
MTM storage solutions are designed to help shooters protect their investment and keep ammunition organized, accessible, and ready for use whenever needed.
Shop MTM for Premium Ammo Storage Solutions
Explore MTM’s full line of ammo boxes, ammo cans, ammo crates, reloading accessories, shooting gear, and storage products designed for serious shooters and reloaders.
