Will my .300 WSM handloads fit in the RMLD-50-10 if loaded out to maximum overall length?

Yes, provided your total cartridge length does not exceed the hard limit of 3.08 inches. This medium-large box is specifically engineered for short-fat magnums and big-bore lever-action cartridges like the .300 WSM, 6.5 PRC, and .45-70 Government, keeping each round securely separated to prevent tip damage during transport.

How does this ammo box perform during multi-day hunting trips in hot Australian outback conditions?

The high-impact, textured polypropylene construction is designed to withstand rugged bush environments without warping, cracking, or chipping under solar heat exposure. While it lacks an internal rubber O-ring seal for fully waterproof storage, the heavy-duty Snap-Lok latch and full-length mechanical hinge ensure your rounds remain secure and dust-free on rough backcountry tracks.

Can I use the RMLD-50-10 to store standard short-action rifle rounds like the .308 Winchester?

It is not recommended. The RMLD-50-10 is built specifically with wider individual cells to accommodate bulky rebated and rimmed cases (.535 to .555 inches in diameter), meaning standard-diameter short-action cartridges will fit loosely and rattle inside the compartments. MTM recommends using the standard RM-50 case instead for .308 Win or 6.5 Creedmoor.

What kind of warranty or long-term durability can I expect from the hinge mechanism?

The case features a robust mechanical hinge that is backed directly by MTM's 25-year hinge guarantee. Molded from heavy-duty polypropylene with a scuff-resistant textured surface, it provides reliable grip for wet or gloved hands and allows for stable, stackable storage in your safe or vehicle over decades of heavy use.

Rifle Ammo Box - MTM Case-Gard RMLD-50-10

The Mtm Rifle Ammo Box - 50 Round Flip-Top 300 Wsm 45-70 7mm Saum - Green is a heavy-duty polypropylene storage container engineered to protect and organise larger-diameter rifle rounds. Molded from textured, scuff-resistant material that resists warping, cracking, chipping, and peeling, it provides secure, cell-divided storage to prevent cartridge-to-cartridge contact during transport. The box incorporates a mechanical hinge alongside a Snap-Lok latch to eliminate accidental spills in range bags or hunting packs, and it includes a pressure-sensitive load data label for recording sight-in and handloading details.

Key Features

High-Impact Polypropylene Construction: Scuff-resistant textured outer body provides a secure grip in wet or gloved conditions and enables stable stacking.
Positive Snap-Lok Latching: Mechanical full-length hinge and latch mechanism maintain a tight closure to safeguard ammunition in the field.
Individual Cell Separation: Internal compartments isolate each cartridge to protect projectile tips and case mouths from transit damage.
Integrated Load Label: Supplied with a pressure-sensitive label to record reload recipes, bullet seating depths, and range notes.

Specifications

Product Type: Flip-top rifle ammunition box
Ammunition Capacity: 50 rounds
Maximum Overall Cartridge Length (Max OAL): 3.08 inches (78.23 mm)
Storage Orientation: Bullet-up
Material: Polypropylene
Colour: Forest Green
Calibre Compatibility: .300 WSM, 7mm WSM, .270 WSM, .325 WSM, .338 WSM, .300 Rem SAUM, 7mm Rem SAUM, .45-70 Government, .450 Marlin, .444 Marlin, 6.5 PRC, 6.8 Western, .300 RCM, .338 RCM, .30-30 Win, .376 Steyr, .30-40 Krag, and 28 Ga. shotshells

Who is the Mtm Rifle Ammo Box - 50 Round Flip-Top 300 Wsm 45-70 7mm Saum - Green for?

Australian Deer and Pig Hunters — transports up to 50 rounds of wide-body ammunition measuring up to 3.08 inches (78.23 mm) in overall length, such as .300 WSM, 6.5 PRC, and .45-70 Government, within a rigid, flip-top rifle ammo box built for rough field transit.
Precision Handloaders — secures custom batches of short magnum or large-bore lever-action cartridges in an individual 50-round grid that supports a maximum cartridge length of 3.08 inches (78.23 mm) to maintain projectile integrity and record batch data.

Less suitable for: Long-action cartridges exceeding 3.08 inches (78.23 mm) Max OAL (such as full-length magnum cases that require an extended extra-large rifle ammo box) and standard-diameter short-action cartridges like .308 Winchester or 6.5 Creedmoor, which fit too loosely and require a standard-width medium rifle ammo box.

SKU	MM41168LP
Model #	RMLD-50-10
Brand	Mtm Case-Gard
Shipping Weight	1.0000kg

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Mtm Case-Gard Rmld-50-10 Ammo Box 50 Round Short Magnum Green

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