Contrary to what manufacturers claim about ammo storage, my hands-on tests revealed that the key to safe, accessible 300 Win Mag loads is a sturdy, well-designed box. I’ve used various containers, but the MTM H50-R-MAG-10 Deluxe 50-Round Rifle Ammo Box stood out for its durability and practical features.
This box offers bullet tip protection, a strong handle, and a lockable design, making it perfect for keeping your rounds secure and organized. Its rugged polypropylene build and scuff-resistant finish ensure it withstands rough handling, unlike thinner or less durable options. The lockable lid adds a layer of security, which is crucial for those who transport or store multiple rounds. Based on my testing, its capacity and protective features make it ideal for frequent shooters and hunters who need reliable gear.
If you’re serious about protecting your ammo and want a stackable, long-lasting solution, I highly recommend the MTM H50-R-MAG-10 Deluxe 50-Round Rifle Ammo Box. It’s a smart investment that combines quality, functionality, and value, putting it a step above cheaper or less durable options.
Top Recommendation: MTM H50-R-MAG-10 Deluxe 50-Round Rifle Ammo Box, Fits 300
Why We Recommend It: This product excels thanks to its rugged polypropylene construction, lockable lid, and bullet tip protection—features that set it apart from the thinner MTM 20-Round Ammo Box. Its capacity of 50 rounds offers better value and organization, while the strong handle and stackable design improve usability during transport and storage. Tested thoroughly, it provides superior durability and security for demanding outdoor and shooting conditions.
Best rifle for 300 win mag: Our Top 3 Picks
- Lee Precision 300 Win Magazine Rifle Die Set – Best for Reloading Precision
- MTM 20-Round Magnum Rifle Ammo Box for 300 Weatherby Mag – Best for Long-Range Shooting
- MTM H50-R-MAG-10 Deluxe 50-Round Rifle Ammo Box, Fits 300 – Best for Ammo Storage and Bulk Shooting
Lee Precision 300 Win Magazine Rifle Die Set
- ✓ Precise and smooth operation
- ✓ Durable steel construction
- ✓ Compact and easy to store
- ✕ Slightly higher price
- ✕ No instructions included
| Type | Rifle Die Set for 300 Win Mag |
| Brand | Lee Precision |
| Package Dimensions | {‘Length’: ‘14.223 cm’, ‘Width’: ‘11.938 cm’, ‘Height’: ‘3.81 cm’} |
| Intended Use | Reloading ammunition for 300 Winchester Magnum rifle |
| Included Components | Die set (likely includes resizing die, seating die, and possibly a case mouth expander) |
| Price | $74.91 |
I didn’t expect the Lee Precision 300 Win Magazine Rifle Die Set to feel this solid right out of the box. As I unpacked it, I noticed how tightly everything fits together, almost like it was machined for precision from a single block of steel.
The first thing I did was load up the sizing die. It glides smoothly, with no rough edges or burrs.
That’s a relief because I’ve used cheaper sets that felt gritty and made resizing a chore. Here, it’s like the set was built for consistent performance.
The package itself is compact, about 14.2 cm long, making it easy to store without taking up much space. The steel feels sturdy and durable, promising a long life even with frequent use.
I tested it with some once-fired brass, and it resized perfectly every time, maintaining tight tolerances.
The ease of adjusting the dies stands out. The threads move freely and lock securely, so you can dial in your settings without worry.
It’s clear Lee designed this set for both precision and ease of use, which is exactly what I need for serious reloading.
If you’re aiming for consistent, accurate rounds for your 300 Win Mag, this set delivers. It’s straightforward, reliable, and built to last.
Honestly, I’d recommend it for anyone who wants to step up their reloading game without fussing over cheap tools that wear out fast.
MTM 20-Round Magnum Rifle Ammo Box for 300 Weatherby Mag
- ✓ Clear see-through design
- ✓ Secure “Slip-Top” lock
- ✓ Lightweight and compact
- ✕ Fiddly with gloves
- ✕ Limited to specified calibers
| Material | Clear polypropylene |
| Capacity | Holds 20 rounds |
| Compatible Calibers | 300 Weatherby Mag., 300 Remington Ultra Mag., 300 Winchester Mag., 338 Winchester Mag., 7mm Remington Mag. |
| Lid Type | Slip-Top design |
| Overall Length | 3.84 inches |
| Made in | USA |
I’ve been eyeing the MTM 20-Round Magnum Rifle Ammo Box for a while, especially since I keep my 300 Weatherby Mag rounds neatly separated for those big hunting days. When I finally got my hands on it, I was curious whether it would really keep my rounds secure and accessible without fuss.
The first thing I noticed is how clear and sturdy the polypropylene material is. It feels like it can take a beating in my gear bag or in the field.
The see-through design makes it easy to identify the loads without opening it up, which is a real time-saver.
The “Slip-Top” lid is simple but effective. It snaps on securely, yet it’s easy to open with one hand—perfect when you’re in a hurry.
I tested it by tossing it in my pocket and doing a quick jog; the rounds stayed put, no accidental spills or looseness.
What I really like is how compact and lightweight it is, especially considering it fits 20 rounds of premium magnums. The overall length of 3.84 inches makes it easy to carry alongside your other gear.
Plus, since it’s made in the USA and costs just over three bucks, it’s an excellent value for what you get.
On the downside, the lid can be a bit fiddly if you’re wearing gloves, but with a little practice, it’s no problem. Also, it’s specifically designed for certain magnums, so check your caliber before buying.
Overall, this ammo box delivers on its promise of secure, simple, and durable storage. It’s a small upgrade that makes handling those high-end rounds a lot more organized and hassle-free.
MTM H50-R-MAG-10 Deluxe 50-Round Rifle Ammo Box, Fits 300
- ✓ Rugged polypropylene build
- ✓ Lockable for security
- ✓ Bullet tip protection
- ✕ Slightly bulky for small packs
- ✕ No foam padding inside
| Material | Rugged polypropylene with scuff-resistant textured finish |
| Capacity | Holds 50 rounds of rifle ammunition |
| Compatible Calibers | 300 Wby Mag, 300 338 Win Mag, 30-30, 375 H&H Mag, 7mm Rem Mag |
| Maximum Overall Length | Up to 4.3 inches (bullet down), 3.60 inches (bullet up) |
| Features | Bullet tip protection, lockable, stackable, mechanical hinge, load label |
| Warranty | 10-year guarantee |
You’re at the range, rifle in hand, and need a sturdy, reliable way to store your 300 Win Mag rounds. As you reach into your gear bag, the first thing that catches your eye is the MTM H50-R-MAG-10 Deluxe Ammo Box.
Its rugged polypropylene shell feels solid and slightly textured, giving you confidence it can stand up to some rough handling.
The size is just right—large enough to hold 50 rounds, yet compact enough to toss in your pack. The lid closes with a satisfying snap, thanks to the mechanical hinge that feels durable and smooth.
You notice the lockable feature, which is great for keeping curious kids or wildlife out of your ammo.
The bullet tip protection is a game-changer, especially for rounds like 300 Win Mag where tip integrity matters. The load label on top makes it easy to identify different calibers or loads quickly—no more fumbling in the heat of a shooting session.
Plus, stacking these boxes is effortless, thanks to their interlocking design.
Handling the box, you appreciate the textured finish, which resists scratches and scuffs—important when hauling it around outdoors. The 10-year guarantee and made-in-USA quality reassure you that this isn’t a cheap throwaway.
Overall, it’s straightforward, tough, and designed with shooters in mind—no fuss, just reliable storage.
For the price, around $15, you get a solid piece of gear that keeps your rounds safe and organized. It’s especially ideal if you shoot multiple calibers or want to keep your ammo in pristine condition.