The Chadwick & Trefethen MTM Slip-Top Rifle Ammo Box – 20 Round, 2.35" High, Fits 17 Rem–351 WSL, Model J-20-XS-16 (UPC 026057223162) is a compact, durable ammunition storage solution designed specifically for shorter, small-bore and classic rifle cartridges. Perfect for hunters, reloaders, and target shooters, this 20-round slip-top rifle ammo box gives your cartridges individual protection, tidy organization, and easy transport—far superior to flimsy factory cardboard boxes.
Compact 20-Round Rifle Ammo Box for Shorter Cartridges
The J-20-XS-16 Slip-Top Rifle Ammo Box is built to securely hold 20 rifle rounds up to approximately 2.35" overall length, making it ideal for a variety of shorter cartridges, including those in the 17 Remington to 351 WSL range (always verify fit with your specific loads).
Typical fit range includes:
Instead of letting your valuable ammunition rattle around in thin cardboard packaging, this hard-plastic case gives each cartridge its own slot, helping maintain bullet tip integrity and overall consistency.
2.35" Interior Height – Perfect for Small-Bore & Compact Rounds
With an internal height of 2.35", this ammo box is tailored for shorter rifle cartridges and some pistol-length rifle loads:
Prevents excessive vertical play for short rounds that would otherwise “disappear” in deeper boxes
Keeps bullet tips safely away from the lid, reducing the risk of deformation
Ideal for varmint cartridges and classic intermediate calibers that don’t require a tall magnum-sized case
If you load or shoot compact cartridges, this size is far more efficient and secure than oversized generic boxes.
Slip-Top Lid – Quiet, Simple, and Reliable
The slip-top design makes this ammo box easy to use and reliable in the field:
Lid slides over the base for a firm, friction-fit seal
Quieter to open than snapping or clamshell-style hinged cases—great for hunting situations
Simple construction with no hinges or latches to break, extending the life of the box
It’s a no-nonsense, proven style that just works, whether you’re on the bench or out in the field.
Rugged, Reusable Plastic Construction
Built from tough, molded plastic, the Chadwick & Trefethen MTM J-20-XS-16 is designed for repeat use:
Impact-resistant body helps protect ammo from dings and damage in bags or cases
Reusable over and over—much more durable and cost-effective than disposable factory packaging
Resists typical environmental factors like humidity, light splashes, and normal temperature swings
For reloaders and frequent shooters, a reliable ammo box like this quickly becomes an essential part of an organized loading bench and range kit.
Individual Cartridge Slots – Stay Organized at the Bench & in the Field
Each round has its own dedicated compartment, which helps you:
Prevent bullet tip contact and damage, especially on soft-point or polymer-tipped loads
Keep precise round counts at a glance—know exactly how many you’ve fired and how many you have left
Organize different loads or bullet weights by row or box, especially useful when working up handloads
Label the box or lid with cartridge data, charge weights, or lot numbers and you’ve got a neat, dependable system for tracking performance.
Easy to Pack, Stack, and Transport
The J-20-XS-16 ammo box is conveniently sized for:
Range bags and backpacks – compact footprint that doesn’t waste space
Stacking on shelves or in cabinets for long-term storage
Tossing into a truck, ATV, or rifle case for quick trips to the field or the range
Whether you’re shooting varmints, ringing steel, or sighting in at the bench, this 20-round box keeps your ammo protected and ready.
Ideal for Hunters, Varmint Shooters & Reloaders
This 20-round, 2.35" high slip-top rifle ammo box is especially useful if you:
Shoot 17 Rem, 221 Fireball, 30 Carbine, or similar shorter rounds
Want to protect expensive factory ammunition from moisture and crushing
Reload and need a consistent way to store test batches and tuned handloads
Prefer quiet, simple access to ammo when hunting or working in the field
Compact cartridges deserve a compact, purpose-built case—and this model delivers exactly that.
Key Features & Specifications – MTM Slip-Top Rifle Ammo Box J-20-XS-16
Brand: Chadwick & Trefethen / MTM-style
Model: J-20-XS-16
UPC: 026057223162
Capacity: 20 rounds
Height: 2.35" (internal) – sized for shorter rifle cartridges
Cartridge Range: Designed for 17 Remington through 351 WSL-length cartridges (verify fit for your specific load)
Design: Slip-top lid that slides over the base
Material: Durable, molded plastic – reusable and impact resistant
Color: Typically translucent or solid (varies by lot; check listing images if color is critical)
Use Cases: Hunting, varmint shooting, long-range practice with small calibers, reloading, and organized ammo storage
If you’re looking for a compact 20-round rifle ammo box specially sized for shorter cartridges like 17 Rem to 351 WSL, the Chadwick & Trefethen MTM Slip Top Rifle Ammo Box J-20-XS-16 (UPC 026057223162) offers organized, reusable, and protective storage that keeps your ammunition ready for the bench, the truck, and the field.
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