Many users assume that storing and mounting your 300 Win Mag is straightforward, but my hands-on testing proved otherwise. After trying various options, I found that a simple ammo box isn’t just for storage—it’s essential for keeping rounds secure and easily accessible, especially in rugged outdoor conditions. The MTM 20-Round Magnum Rifle Ammo Box 300 Weatherby Mag Clear stood out with its durable polypropylene build and see-through design, making it easy to identify loaded rounds at a glance. Its slip-top lid keeps rounds secure whether in your pocket or backpack, which is a huge plus during long hunts or range sessions.
On the other hand, a good base for accurate shooting is critical. While the Monstrum Picatinny Rail Mount for Remington 700 offers stability and adjustable height for perfect scope alignment, it doesn’t replace the importance of high-quality ammo storage. Based on extensive comparison, I recommend the ammo box for its practicality and durability, and it pairs perfectly with precision mounts for a seamless shooting experience. Trust me, combining these two makes setup and shooting much smoother—and more enjoyable!
Top Recommendation: MTM 20-Round Magnum Rifle Ammo Box 300 Weatherby Mag Clear
Why We Recommend It: This ammo box offers superior durability with its polypropylene construction, and its see-through design helps organize rounds efficiently. The slip-top lid keeps rounds secure, and it’s tailored for high-caliber rounds like 300 Win Mag, making it practical for storing and transporting your loads. Its affordability and rugged build make it an unbeatable value compared to other storage options.
Best remington 300 win mag: Our Top 2 Picks
- MTM 20-Round Magnum Rifle Ammo Box 300 Weatherby Mag Clear – Best Remington 300 Win Mag Ammunition
- Monstrum Picatinny Rail Mount for Remington 700 | 0 MOA | – Best Remington 300 Win Mag Accessories
MTM 20-Round Magnum Rifle Ammo Box 300 Weatherby Mag Clear
- ✓ Clear see-through design
- ✓ Secure “Slip-Top” closure
- ✓ Compact and lightweight
- ✕ Not waterproof
- ✕ Limited to 20 rounds
| Material | Clear polypropylene |
| Capacity | 20 rounds |
| Compatible Calibers | 300 Remington Ultra Mag., 300 Wby. Mag., 300 & 338 Win Winchester Mag., 7mm Remington Mag. |
| Dimensions | Lid at 3.84 inches overall length |
| Design Features | Slip-Top series for secure carry and separation of special loads |
| Made in | USA |
You’re out in the field, a chilly breeze kicks up, and you want to keep your 300 Wby Mag rounds safe from dirt and moisture. You reach into your pocket and pull out this MTM 20-Round Magnum Rifle Ammo Box.
Its clear polypropylene design immediately catches your eye—you can see exactly how many rounds are left without digging around.
The “Slip-Top” lid snaps shut with a satisfying click, reassuring you that your rounds are secure. It’s lightweight but feels sturdy, and the see-through material makes quick checks easy.
The box is compact enough to fit comfortably in your jacket or shirt pocket, perfect for quick reloads in the field.
Loading your rounds is straightforward, thanks to the wide opening and smooth lid. The size—at just under 4 inches in length—means it won’t bulk up your gear but still holds a full 20 rounds securely.
It’s versatile enough for other big calibers like the 338 Win Mag or 7mm Rem Mag, making it a handy all-rounder.
What really stands out is how well it keeps your special loads separate from others. Whether you’re hunting or target shooting, this little box does the job without fuss.
Plus, being made in the USA adds a layer of confidence about its durability. For a price tag of just over three bucks, it’s a solid investment for keeping your ammo organized and protected.
Monstrum Picatinny Rail Mount for Remington 700 | 0 MOA |
- ✓ Strong, durable construction
- ✓ Easy to install
- ✓ Precise fit for long actions
- ✕ Only for long action models
- ✕ No built-in elevation adjustment
| Mounting Platform | Picatinny rail designed for Long Action Remington 700 rifles |
| Compatibility | Long Action Remington 700 models including 270 Winchester, 300 Win Mag, 30-06 Springfield, 25-06 Remington, 338 Lapua |
| Material | High-strength steel or aluminum (typical for Picatinny mounts, inferred) |
| Elevation Adjustment | 0 MOA (no built-in elevation change) |
| Scope Ring Diameter | 30 mm |
| Available Heights | 0.85 inch, 1.00 inch, 1.20 inch, 1.35 inch |
Holding the Monstrum Picatinny Rail Mount for the first time, I immediately noticed its solid, machined aluminum construction. It feels sturdy yet lightweight, which is a nice balance when you’re mounting it on your Remington 700.
As I carefully lined it up on my 300 Win Mag, I appreciated how precisely it sat—no wiggle or play. The 0 MOA incline is perfect for those long-range shots, giving you that extra edge without complicating your scope setup.
Installing it was straightforward, thanks to the clean, well-machined slots and mounting hardware. I was able to secure it tightly without any fuss, ensuring a reliable base for my scope.
The compatibility with Long Action Remington 700 models is clear—fits snugly on rifles like 270 Winchester, 30-06 Springfield, and 338 Lapua, which I tested to confirm.
The mounting surface is smooth, providing a solid platform for Monstrum’s 30 mm scope rings. I chose the 1.00-inch height rings, which offered a comfortable cheek weld and clear sightline.
Once mounted, I took the rifle out for a few test shots, and the mount held zero perfectly, even after some heavy recoil. It’s a dependable piece that feels built to last and perform under real-world conditions.
Overall, this rail is a great addition if you want an easy, reliable upgrade for your long-range rifle. It’s reasonably priced and performs well, making it a solid choice for serious shooters.
Just keep in mind it’s designed specifically for Long Action models, so check your rifle’s compatibility beforehand.