Buy storage one calibre at a time and you end up with a cupboard full of half-empty boxes. The Universal Tray Insert System takes the opposite approach: six trays, one case, and enough coverage that most shooters need two of them for everything they own.
The trick is case-head diameter, not calibre
Cartridges are named after the bullet, but the bullet is the part that sticks out of the tray. What has to fit in the pocket is the other end — the case head, rim or belt. That's why a .243 Win and a .30-06 Sprg sit in the same tray despite one throwing a 6mm pill and the other a 30-cal: both are built on a 0.473" case head.
Group by that number instead of by calibre and roughly twenty-two commonly available Australian cartridges collapse into six pocket sizes. One tray covers a shelf of different boxes.
The six families
| Tray | Capacity | Built for |
|---|---|---|
| Varmint | 160 rounds | Small case heads — .223 Rem / 5.56, .222 Rem, .204 Ruger |
| Pistol | 126 rounds | Common handgun calibres, rimmed and rimless |
| Hunter | 104 rounds | Standard 0.473" heads — .308 Win, .270 Win, .243 Win, 7mm-08, .30-06 |
| Rimmed Lever | 104 rounds | Rimmed lever-action cartridges |
| Magnum | 94 rounds | Belted and magnum heads — .300 Win Mag, 7mm Rem Mag, 6.5 & 7mm PRC |
| Big Bore | 76 rounds | Large case heads — .45-70 and similar |
Capacity climbs as the case head shrinks, because smaller pockets sit closer together on the same footprint. Every tray uses the same outer dimensions and drops into the same Tactix Tough Case, so swapping families is a matter of lifting one out and dropping another in.
Working out which one you need
Measure the widest part of the base of your case — rim, belt or head, whichever is largest — and match it against the bore diameters on the Calibre Compatibility Guide. Choose the next size up if you land between two. Depth is set to the shortest cartridge in each family, so the projectile always stays proud of the tray face and easy to pick out.
Where a universal tray stops being the right answer
Honest limitation: a pocket that has to accept every head in its family is sized to the largest one. If you shoot a cartridge that sits at the small end of its group, the round will stand square and won't roll, but it won't be gripped the way a calibre-specific pocket grips it. For most people that's a fair trade for one tray instead of five. If you shoot a single calibre in volume and want a tighter index, tell us which one — dedicated trays are part of what we do.
Two ways in
- Universal Tray Insert System — the tray on its own, dimensioned for a Tactix Tough Case (Small) you can pick up at Bunnings.
- Complete Case — tray and hard case together, ready to load.
Precision 3D-printed and manufactured in Australia. Running something unusual? Send us the cartridge and we'll confirm the fit before you order — custom configurations are available on request.