Weatherby M22437Hcb 224Wthbymag 37Gr Hammer Custom 20 Per Box/10 Case

If you're running a Weatherby rifle in .224 Weatherby Magnum and you want factory loads that deliver both velocity and precision, Weatherby's 37-grain Hammer Custom ammunition is built for the job. The .224 Weatherby Magnum itself is one of the quickest .22 caliber cartridges available—a proprietary design that traces back to Roy Weatherby's 1964 introduction—and this load leverages that heritage with a 37-grain Hammer projectile designed to handle varmints and predators at distance. Each box contains 20 rounds; this listing is for a 10-box case (200 rounds total), making it convenient for shooters who run this caliber regularly.

The .224 Weatherby Magnum was engineered from scratch to push the boundaries of what a .22 can do downrange. That high velocity comes through in factory loads like these, translating to a flatter trajectory and maintained energy on targets at distance—valuable traits whether you're working coyotes across open country or engaging prairie dogs where every shot counts. The 37-grain bullet weight sits in the middle of the spectrum for this cartridge, balancing speed with bullet construction for reliable performance on small game and varmints.

Because this is a proprietary Weatherby cartridge, ammo selection is narrower than you'll find in mainstream calibers. Having a reliable source for factory loads—especially in larger quantities—takes the guesswork out of supply. These rounds come loaded to Weatherby's specifications, so if your rifle is a Weatherby .224 Magnum, you know they'll chamber and perform as intended.

Key Features

• 37-grain Hammer Custom projectile designed for varmint and predator hunting
• Factory ammunition for Weatherby .224 Magnum rifles
• 20 rounds per box; 10-box case (200 total rounds)
• Optimized for downrange energy and flat trajectory

Specifications

Frequently Asked Questions

Is this ammo compatible with my Weatherby rifle in .224 Weatherby Magnum?

Yes. This is factory ammunition loaded to Weatherby specifications for .224 Weatherby Magnum rifles. As long as your rifle is chambered in .224 Weatherby Magnum, these rounds are designed to function correctly.

What is the .224 Weatherby Magnum?

The .224 Weatherby Magnum is a proprietary high-velocity cartridge introduced by Weatherby in 1964. It was designed from the ground up (not based on a parent case) to deliver the speed and downrange energy needed for varmint and predator hunting at distance, with a trajectory that performs well beyond typical .22 caliber ranges.

How many rounds are in this case?

This is a 10-box case containing 200 total rounds (20 rounds per box).

What game is this ammo suitable for?

The 37-grain Hammer Custom load is designed for varmints and predators—including coyotes and prairie dogs—where flat trajectory and downrange energy are priorities.