Description
CCI took two of its proven rimfire ideas and mashed them together for this load: the stout velocity of the Maxi-Mag +V platform and the fragmenting TNT bullet design that's made a name for itself on varmints. The result is a 30 grain hollow point leaving the muzzle at 2200 fps, which puts it among the fastest options in 22 WMR. That extra speed flattens the trajectory and keeps energy transfer high, so you're not just hitting the target, you're putting a real dent in it.
What Makes the Maxi-Mag TNT Bullet Different
The TNT hollow point isn't a simple cup-and-core design. It's built to break into multiple pieces on contact, with each fragment carving its own wound channel instead of the bullet just punching a single hole through. That's a big reason this load has such a reputation for dropping ground squirrels, prairie dogs, and other small pests fast, since a hit almost anywhere on the animal tends to do the job. With a muzzle energy right around 322 ft-lbs, there's plenty of punch behind that fragmentation.
Ballistics Behind the CCI Maxi-Mag TNT Load
A ballistic coefficient of .088 isn't going to win any long range competitions, but that's not really the point of this cartridge. Inside typical varmint hunting distances, the flat-shooting nature of this load combined with the 2200 fps velocity means less guessing on holdover and more confidence on smaller targets. Brass casings and CCI's own priming and propellant keep shot-to-shot consistency tight, which matters when you're trying to connect on something the size of a coffee can at fifty or seventy yards.
Buying the Maxi-Mag TNT Case
This listing is packaged as a full case, 40 boxes of 50 rounds for a total of 2000 rounds. That's a practical way to stock up if you're running traps for pests regularly, sighting in a new rimfire rifle, or just tired of making repeat runs to restock ammo every few weeks. Buying by the case also means every round comes from the same consistent CCI production run.
Key Specifications
- Caliber: .22 WMR (Winchester Magnum Rimfire)
- Bullet Type: TNT Jacketed Hollow Point (JHP)
- Bullet Weight: 30 grains
- Muzzle Velocity: 2200 fps
- Muzzle Energy: 322 ft-lbs
- Case Material: Brass
- Ballistic Coefficient: .088
- Application: Varmint / Small Game
- Rounds per Box: 50
- Boxes per Case: 40
- Total Rounds per Case: 2000
- Manufacturer: CCI Ammunition
- Model Number: 63
- Manufacturer Part Number: 63CASE
- UPC: 10076683000634
What’s Included
- 2000 rounds of CCI Maxi-Mag TNT 22 WMR ammunition
- 40 factory boxes of 50 rounds each
- Brass-cased, boxer-primed cartridges
Frequently Asked Questions
What's the best use for CCI Maxi-Mag TNT 22 WMR ammo?
This load is built for varmint and pest control work like ground squirrels, prairie dogs, and similar small critters. The 30 grain hollow point fragments quickly on impact, which makes it very effective on smaller, thin-skinned targets rather than anything larger where deeper penetration is needed.
How does the TNT bullet expand compared to a standard hollow point?
The TNT design is a segmented hollow point that separates into multiple pieces on contact instead of just mushrooming. Each fragment cuts its own path through the target, which is why it has such a strong reputation for quick, decisive results on small game and pests.
Does this ammo shoot best out of rifles or handguns?
You'll get the full 2200 fps velocity out of a rifle-length barrel, since that extra barrel length gives the powder more room to build speed. Shorter barreled handguns will still cycle it fine, just expect noticeably lower velocity out of a short barrel compared to a rifle.
Why buy the Maxi-Mag TNT in a 2000 round case instead of single boxes?
Buying the full case means every box comes from the same production run, which keeps velocity and accuracy consistent across all 2000 rounds. It's also a practical way to stock up if you're doing regular pest control or putting a lot of rounds through a rimfire rifle each season.





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