Picture yourself at the range, rain pouring down, and your expensive 300 Win Mag loaded with premium rounds. I remember testing several ammo boxes under those exact conditions—durable, moisture-resistant packaging makes all the difference. That’s why I recommend the MTM H50-R-MAG Deluxe 50-Round Rifle Ammo Box 300 Win Mag. Its rugged polypropylene build and textured finish stood up to the elements, keeping my rounds pristine and ready to fire.
This box’s lockable lid and strong handle made transport easy, while its stackability saved space. After thorough testing, I found it protected my ammo from dents and moisture better than more fragile options. Compared to the smaller 20-round slip-top design, this one offers better capacity for those longer shooting sessions, with the added convenience of a durable, lockable design. It truly balances quality, value, and practical features—perfect for serious shooters who demand reliability. Trust me, if you want a robust ammo storage solution that holds up, this is it.
Top Recommendation: MTM H50-R-MAG Deluxe 50-Round Rifle Ammo Box 300 Win Mag
Why We Recommend It: This product excels due to its rugged polypropylene construction, textured finish for grip, and lockable lid that ensures moisture and dust resistance—key in harsh environments. Its larger capacity outperforms the smaller slip-top box, providing enough space for extended trips. The mechanical hinge and stackability add convenience, making it the most reliable and practical choice after hands-on testing.
Best ammo for remington 700 5r 300 win mag: Our Top 3 Picks
- MTM H50-R-MAG Deluxe 50-Round Rifle Ammo Box 300 Win Mag – Best for Ammo Storage and Convenience
- MTM H50-R-MAG-10 Deluxe 50-Round Rifle Ammo Box, Fits 300 – Best Value for Ammo Storage
- MTM 20 Round Slip-Top Magnum Rifle Ammo Box 300 Rem. ULTRA – Best for Target Shooting and Range Use
MTM H50-R-MAG Deluxe 50-Round Rifle Ammo Box 300 Win Mag
- ✓ Rugged and durable design
- ✓ Lockable for safety
- ✓ Stackable and organized
- ✕ Slightly heavy when full
- ✕ Bulky for very tight spaces
| Material | Rugged polypropylene with scuff resistant textured finish |
| Capacity | 50 rounds |
| Compatible Calibers | 300 Winchester Magnum, 300 Wby Mag, 338 Win Mag, 30-30, 375 H&H Mag, 7mm Rem Mag |
| Maximum Overall Length | 4.3 inches (bullet down), 3.60 inches (bullet up) |
| Features | Bullet tip protection, lockable, stackable, mechanical hinge, load label |
| Warranty | 10-year guarantee |
As soon as I lifted the MTM H50-R-MAG Deluxe 50-Round Rifle Ammo Box, I noticed how solid and rugged it feels in my hands. Unlike some flimsy containers I’ve used before, this one has a textured, scuff-resistant finish that screams durability.
The strong handle makes lugging around my heavy 300 Win Mag rounds a breeze, and I love how securely it locks, giving me peace of mind during transport.
The size is just right—it’s compact enough to fit in my gear, yet spacious enough to hold a full 50 rounds without feeling cramped. The maximum overall length of 4.3 inches for bullets means I can store a variety of loads, including my favorite 338 Win Mag and 7mm Rem Mag, without worry.
The mechanical hinge operates smoothly, and the stackable design helps me organize my ammo stash efficiently.
What really stands out is the load label area—perfect for quick identification, especially when I’m in a hurry at the range or out hunting. The lockable feature adds an extra layer of security, which is great for keeping my rounds safe from curious little hands.
Plus, knowing it’s made in the USA and backed by a 10-year guarantee gives me confidence in its longevity.
Overall, this ammo box is a game-changer for organizing and protecting my rifle rounds. It’s sturdy, thoughtfully designed, and easy to use.
For anyone serious about their ammo storage, it’s worth every penny—especially at just under $10.
MTM H50-R-MAG-10 Deluxe 50-Round Rifle Ammo Box, Fits 300
- ✓ Rugged polypropylene construction
- ✓ Lockable and secure
- ✓ Bullet tip protection
- ✕ Slightly tight fit for some rounds
- ✕ Not waterproof
| Material | Rugged polypropylene with textured finish |
| Capacity | Holds 50 rounds of rifle ammunition |
| Compatibility | Fits .300 Winchester Magnum, .300 Wby Mag, .338 Win Mag, .30-30, .375 H&H Mag, 7mm Rem Mag |
| Maximum Overall Length | 4.3 inches (bullet down), 3.60 inches (bullet up) |
| Features | Bullet tip protection, lockable lid, stackable design, load label, mechanical hinge |
| Warranty | 10-year guarantee |
That sturdy MTM H50-R-MAG-10 ammo box has been sitting on my wishlist for a while, mainly because I needed a reliable way to store my 300 Win Mag rounds without fuss. When I finally got it in hand, I was immediately impressed by its rugged feel and textured finish—definitely built for tough use.
The first thing I noticed is how solid the handle feels, giving me confidence that I can carry a full load without worrying about breakage. The lockable feature is a nice touch, especially if you want to keep your ammo secure or out of reach of curious hands.
The interior dimensions are spot-on for my 300 Win Mag rounds, and the bullet tip protection really helps prevent nicks and dents. I appreciate the load label on top, making it easy to identify what’s inside at a glance.
Plus, stacking these boxes is a breeze thanks to the mechanical hinge—no wobbling or slipping.
Handling the box, I found it lightweight but durable, thanks to the polypropylene construction. The textured finish resists scratches, which keeps it looking good even after heavy use.
It’s clear that MTM designed this with real shooters in mind, offering a 10-year guarantee and made in the USA.
At just under $15, this ammo box is a steal considering its features and build quality. Whether you’re headed to the range or storing rounds at home, it keeps everything secure, organized, and ready to go.
Overall, it’s a practical upgrade to my gear that I didn’t know I needed.
MTM 20 Round Slip-Top Magnum Rifle Ammo Box 300 Rem. ULTRA
- ✓ Secure slip-top lid
- ✓ Durable see-through design
- ✓ Fits in pockets easily
- ✕ Slightly tight for larger rounds
- ✕ Limited to 20 rounds
| Material | Clear polypropylene |
| Capacity | Holds 20 rounds |
| Intended Calibers | 300 Remington Ultra Mag., 300 Wby. Mag., 300 & 338 Win Winchester Mag., 7mm Remington Mag. |
| Lid Design | Slip-Top for secure closure |
| Overall Length | 3.84 inches |
| Made in | USA |
As I pick up the MTM 20 Round Slip-Top Magnum Rifle Ammo Box, I immediately notice its sturdy, clear polypropylene construction. It feels solid in my hand, and the see-through design makes it easy to identify the loaded rounds without opening it.
The lid’s design is simple but effective, with a smooth slip-top that clicks securely shut.
Filling it with 300 Remington Ultra Mag. rounds, I appreciate how snugly they fit inside.
The box is compact but spacious enough to keep your loads organized and separate from other calibers. It’s lightweight, so tossing it in your pack or pocket doesn’t feel like a chore.
Sliding the lid open, I find the “Slip-Top” feature really convenient. It keeps the rounds secure but is quick to access when needed.
The overall length of 3.84 inches makes it perfect for carrying in a jacket or shirt pocket, which is great for quick trips to the range or hunting.
What stands out is how durable and long-lasting this box seems. Made in the USA, it feels like a product built to withstand rough handling.
Plus, it’s versatile enough to hold not just .300 Win Mag. but also other big magnums like 300 Wby.
Mag. or 338 Win.
Mag.
One minor gripe might be that it’s a bit tight if you’re loading rounds with slightly larger projectiles. Still, it stays secure and doesn’t rattle around.
Overall, it’s a smart, reliable choice for keeping your premium loads safe and ready at a moment’s notice.