Will my .223 Remington rounds fit securely if they are loaded with long-profile match bullets?

Yes, as long as your total cartridge length does not exceed the 2.65-inch (67.3 mm) maximum overall length ceiling for the RS-100 series. Cartridges are stored bullet-up in individual grid compartments, but note that this standard RS model lacks internal suspension fingers, so extreme care should be taken with delicate polymer tips.

Is this MTM ammo box completely waterproof for damp or rainy conditions in the Australian bush?

No, this model features a heavy-duty snap-lock latch and textured polypropylene construction designed for scuff resistance, but it does not include a rubber O-ring seal. For submerged or extreme all-weather field storage, you should look into an MTM gasketed ammo crate instead.

What kind of hinge durability can I expect when opening and closing the box frequently at the range?

The RS-100-16T utilizes a robust mechanical pin hinge rather than a cheap plastic living hinge that fatigues and snaps over time. MTM backs this mechanical hinge design with a 25-year, 1,000,000-cycle manufacturer guarantee for heavy use.

Rifle Ammo Box - MTM Case-Gard RS-100-16T

The MTM Case-Gard RS-100 Flip-Top Rifle Ammo Box provides structured, mechanical storage for up to 100 small rifle cartridges. Manufactured from heavy-duty, scuff-resistant textured polypropylene plastic, this container features an integrated mechanical pin hinge and a snap-lock front latch to secure ammunition during transit. Its semi-translucent clear green lid allows for rapid visual inventory checks without opening the case, while an included load data label enables precise tracking of powder charges, bullet weights, and batch dates.

Key Features

Mechanical Pin Hinge: Integrated hinge design resists plastic fatigue from repeated opening and closing.
Snap-Lock Latch: Secures the lid against accidental opening when stored inside range bags or during rough vehicle transport.
Individual Grid Compartments: Keeps 100 cartridges upright and isolated to prevent case-to-case contact and damage.
Textured Polypropylene Body: Resists scuffing, chemical exposure, chipping, and warping under ambient conditions.
Load Label Included: Ships with a dedicated paper data label for logging load recipes, bullet profiles, and date batches.

Technical Specifications

Cartridge Capacity: 100 rounds
Maximum Overall Length (Max OAL): 2.65 inches (67.3 mm)
External Dimensions: 4.8″ (L) x 5.2″ (W) x 3.0″ (H) (approx. 12.2 cm x 13.2 cm x 7.6 cm)
Weight: 0.22 kg (approx. 7.7 oz)
Material: Polypropylene
Colour: Clear Green lid with Green/Black base
Calibre Compatibility: .223 Remington / 5.56×45mm NATO, .204 Ruger, 6×47mm, .17 Remington, .221 Fireball, .222 Remington, .222 Remington Magnum, .300 AAC Blackout, .300 Whisper, .350 Legend, .218 Bee, 6mm TCU, and 6mm-223 Remington

Who is the MTM Flip-Top 100-Round Rifle Ammo Box for?

Benchrest Target Shooters — Delivers a dedicated 100-round capacity grid with a compact footprint of 4.8 x 5.2 x 3.0 inches, allowing shooters firing .223 Remington to organise entire match strings neatly on the bench.
Varmint and Pest Controllers — Accommodates high-volume field loads up to a maximum overall length of 2.65 inches (67.3 mm), giving rural shooters managing pests with .204 Ruger or .223 Rem a lightweight 0.22 kg storage solution that fits easily inside vehicle consoles or field packs.
Handloaders — Provides individual compartmentalised storage for 100 batch-separated cartridges with an included load record label, allowing precise tracking of load development stages under a 2.65-inch overall length envelope.

Less suitable for: Cartridges exceeding a maximum overall length of 2.65 inches (such as .243 Win, 6.5 Creedmoor, or .308 Win), which require a medium-to-large rifle ammo box designed for lengths up to 3.05 inches, or submerged and extreme wet-weather field environments, which require an O-ring gasketed ammo crate rather than a non-sealed mechanical box.

SKU	MM41171LP
Model #	RS-100-16T
Brand	Mtm Case-Gard
Shipping Weight	1.0000kg

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Mtm Case-Gard Rs-100-16t Rifle Ammo Box 100 Round Clear Green

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