Ammo boxes and ammo cans

How to choose the right ammo box size

The MTM ammo boxes and cans we stock are sized by case head and overall length. One box will therefore cover several cartridges. We’ve given a few cartridge sizes on this page as an example, but generally if your case has the same head diameter and similar length, it will fit.

In terms of which capacity you should choose, this depends on what you intend to do on the range rather than just your loading batch. 20 round cases suit load development or a single relay. For most rifle disciplines you should opt for a 50 round case, and 100/200 round cases are best for practice ammo and high volume .223 shooting.

Ammo case lid types

Flip-top cases use a hinged lid with a snap latch. Slip-top cases have a separate lid that lifts clear, making the tray easier to load at the bench, but does give you a separate item you need to keep track of. Handled cases come with a molded carry handle - very useful if you’re moving several hundred rounds at a time between your truck and the firing point.

Load development and labelling

During load development you will have four or five charge weights on the bench at once, separated by a few tenths of a grain. Even the most seasoned competitive shooter would struggle to differentiate them by eye - which is why labelling is so important. Separate cases, one per charge weight, is the only really reliable way to keep them apart - and our 20 round boxes are sized perfectly for this job.

At Creedmoor Sports, we are shooting enthusiasts - and we’d recommend writing the full recipe on the lid rather than just abbreviations - bullet, powder, charge weight, primer, brass headstamp, seating depth and date. Six months later, that lid is the only thing tying the group on your target to what went in the case.

Handgun, rimfire and magazines

We stock MTM pistol cases in 9mm, .38 Special and .357 in 50 and 100 round capacities. Our own Creedmoor Sports rimfire slider box holds 100 rounds of .22 Long Rifle for smallbore competition, and the mesh brass bag lets fired cases dry and drop grit before they reach the tumbler. The MTM tactical mag can holds fifteen loaded 30 round .223 and 5.56 magazines in a stackable body.

Frequently asked questions