Will the MTM ST-12-40 tray securely hold 3-inch 12 gauge shotshells alongside standard 2-3/4 inch hulls?

Yes, the ST-12-40 tray is precisely designed to accommodate both standard 2-3/4 inch and 3-inch 12-gauge shotshells. Each of the 50 individual round slots maintains a secure fit to keep hulls upright during reloading or transport, though it is not compatible with larger 10-gauge or smaller 16- and 20-gauge hulls.

Which MTM storage boxes are compatible with this shotshell tray for field transport?

The 10-5/8 inch by 5-7/8 inch tray is engineered to drop directly into MTM dry boxes and carriers such as the SD-100, SF-100, AC50C, and legacy S-100 series cases. In these deeper field boxes, you can stack two trays together to neatly store and transport a total of 100 rounds.

Does this open-top tray provide any weather protection for storing ammunition in the outback?

No, the ST-12-40 is a passive polypropylene staging tray and has an open-top design that will expose your ammunition to rain, dust, and outback grit if used on its own. For fully waterproof and dustproof field transport in harsh Australian environments, you must pair this tray inside an MTM gasketed O-ring dry box.

Are there any electrical compliance requirements or special permits needed to own this accessory in Australia?

As an unpowered, solid polypropylene reloading and storage accessory, the ST-12-40 requires no electrical input, 240V plugs, or SAA/RCM regulatory approvals. It is a completely unregulated firearm accessory suitable for use by clay target shooters and hunters across all Australian states and territories.

12 Gauge Shotshell Tray - MTM ST-12-40

The MTM Case-Gard ST-12-40 Shotshell Tray is a high-impact polypropylene organising and staging accessory designed for 12-gauge shotgun ammunition. It provides a stable 50-round platform for shotgun reloaders to stage standard 2-3/4-inch and 3-inch hulls upright during powder dropping, wad insertion, crimping, and final inspection. In addition to benchtop organisation, the tray functions as a drop-in internal insert for MTM ammo cases and field dry boxes—including the SD-100, SF-100, AC50C, and legacy S-100 series—allowing two stacked trays to transport 100 rounds directly to the shooting range or field.

Key Features

50-Round 12-Gauge Capacity: Holds fifty 12-gauge shotshells (2-3/4" and 3") upright to prevent spills during reloading processes.
Stackable Form Factor: Features a self-nesting profile that allows multiple loaded or empty trays to be stacked securely to save workbench and shelf space.
Drop-In Case Compatibility: Sized specifically to fit inside MTM SD-100, SF-100, AC50C, and S-100 series storage boxes for field transport.
Durable Polypropylene Construction: Moulded from chemical- and moisture-resistant high-impact plastic weighing approximately 180 g (0.4 lbs).
Unpowered & Passive Design: Fully mechanical storage solution requiring zero electrical inputs or maintenance.

Specifications

Brand: MTM Case-Gard
Model: ST-12-40
Gauge Compatibility: 12 Gauge (2-3/4" and 3" shells)
Capacity: 50 rounds
Dimensions: 10-5/8" x 5-7/8" (approx. 270 mm x 149 mm)
Weight: Approx. 180 g (0.4 lbs)
Material: High-impact polypropylene
Colour: Black
Compatible Enclosures: MTM SD-100, SF-100, AC50C, S-100 series

Who is the MTM 50-Round 12-Gauge Shotshell Tray for?

High-volume 12-gauge shotgun reloaders — keeps 50 rounds of 12-gauge hulls upright and stable across a compact 10-5/8" x 5-7/8" footprint during charging, seating, and crimping stages at the reloading bench.
Clay target shooters and duck hunters — allows two 50-round shotshell trays to be stacked as modular inserts inside MTM SD-100, SF-100, or S-100 field cases to organise and transport 100 rounds of bulk 12-gauge ammunition.

Less suitable for: Shooters loading 10-gauge, 16-gauge, or 20-gauge hulls, which require dedicated gauge-specific trays, or anyone requiring standalone weatherproofing, as this open-top tray exposes ammunition to rain and dust unless enclosed in a gasketed O-ring dry box.

SKU	MM41180LP
Model #	ST-12-40
Brand	Mtm Case-Gard
Shipping Weight	1.0000kg

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Mtm Case-Gard St-12-40 Shotshell Tray 12 Gauge 50 Round

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