Finding reliable steel or rugged ammo storage without compromising safety is essential for shooters who routinely handle .308 Winchester, 7.62×51 NATO, and related rifle rounds. This guide highlights five sturdy storage cases designed to keep steel-case and brass ammo secure, dry, and organized. Each option offers features like water resistance, desiccant protection, locking mechanisms, and durable shells to withstand travel and field use.
| Product | Brand | Capacity | Main Benefit |
|---|---|---|---|
| Kinghardcase Waterproof 308 Ammo Case | Kinghardcase | Up to 200 rounds | IP67 protection with shockproof design |
| MTM Case-Gard RM-100-24 | MTM | 100 rounds | Clear blue, snap-lock, stackable |
| Evergreen 6.5 Creedmoor Ammo Case | Evergreen | 96 rounds | ARIDZONE humidity control, lockable |
| Kinghardcase 360 Round Ammo Storage | Kinghardcase | 360 rounds | Desiccant included, versatile for 7.62/.308 |
| MTM Case-Gard RM-50-10 | MTM | 50 rounds | Durable, stackable with load labels |
Kinghardcase Waterproof 308 Ammo Case

The Kinghardcase waterproof ammo case offers significant capacity and protection for .308 Win, 7.62 NATO, and related rifle rounds. It supports up to 200 rounds with a foam insert for secure organization. Built to withstand harsh environments, the case is IP67-rated for waterproof and shockproof protection, and constructed from high-strength ABS with upgraded EVA materials to resist impacts and scratches. A lockable design adds security for transport or storage in shared spaces.
MTM Case-Gard RM-100-24 Rifle Ammo Box

MTM’s RM-100-24 is a 100-round rifle ammo box designed for easy transport and stacking. It features a scuff-resistant textured surface, a snap-lock latch, and stacking feet for organized storage in a range bag or cabinet. Its clear blue body helps verify contents quickly, while the robust construction safeguards 7.62×51 and .308 Win rounds during travel and storage.
Evergreen 6.5 Creedmoor Ammo Case – With ARIDZONE

Though marketed for 6.5 Creedmoor, Evergreen’s ARIDZONE-equipped case also accommodates 308 Winchester and 7.62 rounds. It holds up to 96 rounds and emphasizes humidity control with desiccant beads that indicate when recharging is needed. The lockable design, TwistLock latches, and integrated security features provide waterproof protection and added security for long-term storage or transport.
Kinghardcase 360 Round Ammo Storage Case

This Kinghardcase model is designed for 360 rounds of rifle ammunition, including .308 Win and 7.62×51. The case features a desiccant system to keep contents dry, and it’s suitable for long-term storage and transport. Its roomy interior ensures every round stays organized, helping shooters quickly load for training or matches.
MTM Case-Gard RM-50-10 Rifle Ammo Box

MTM’s RM-50-10 is a compact 50-round box built from virtually indestructible polypropylene. It is designed to fit many popular rifle rounds, including 308 Win and related calibers, with a Snap-Lock latch to prevent accidental openings. The textured finish improves grip, and the box is stackable with others in the MTM line for scalable storage in ranges or garages.
Buying Guide
Key considerations when selecting a steel-case or rugged ammo storage solution include capacity and organization tools. Choose cases with foam inserts or labeled compartments to separate calibers and loads, minimizing the chance of cross-contamination or misloads.
Security features such as lockable latches, tamper-evident mechanisms, and integrated eyelets for cable locks add protection during travel or in shared storage spaces. If you transport ammo frequently, look for waterproof or IP-rated cases to guard against humidity, moisture, and rain exposure in vehicles and outdoor environments.
Humidity control is especially important for long-term storage. Desiccants or ARIDZONE systems help minimize moisture buildup, reducing corrosion risk and maintaining ammunition quality. When desiccants change color, be prepared to recharge or replace them to sustain effectiveness.
Durability is another critical factor. Rigid shells made from high-impact plastics or reinforced composites can withstand drops, bumps, and rough handling at the range or on the way to a training session. Finally, consider compatibility with common rifle models such as AR-10, M14, Remington 700, and other 308/7.62 platforms to ensure the case accommodates your typical ammunition setup.