Description
The .300 Weatherby Magnum is one of the hardest-hitting commercial .30 calibers out there, and feeding it quality brass makes a real difference downrange. This Hornady unprimed case is drawn and formed to the cartridge's belted design with Roy Weatherby's signature double-radius shoulder, so it chambers and headspaces the way it should in your Weatherby-dimensioned rifle. You get a clean slate to build on, picking your own primers, powder, and bullets to dial in a load that suits your barrel and your hunt.
What Sets This Hornady .300 Weatherby Brass Apart
Hornady holds these cases to tight production tolerances, with controlled wall thickness, concentricity, and internal capacity carried across the lot. That consistency matters most in a big high-capacity case like this one, where even small differences in volume can nudge your pressures around. The cases get a pressure calibration check for uniform expansion and are run through inspection before they ship, which is the kind of attention that pays off in repeatable velocity and groups you can trust.
Loading the .300 Weatherby Magnum Case
This is a magnum cartridge that burns a healthy charge of slow powder behind heavy .30 bullets, so it rewards careful handloading. Lighter 150-grain bullets scream out of this round for lighter medium game, 180-grain loads shine on larger medium game at distance, and 200 to 220-grain projectiles let you reach out on heavier animals. You'll need large rifle magnum primers and a proper set of .300 Weatherby dies to work the brass. Because quality brass like this tends to hold up over multiple firings, you can expect good case life when you keep your charges sensible and tend to your trimming and annealing.
Whether you're chasing elk in steep country or stretching things out at the range, starting with brass this uniform takes a big variable off the table. Prime it, load it, and let your rifle tell you what it likes.
Key Specifications
- Manufacturer: Hornady
- Manufacturer Part Number: 8672
- UPC: 090255486728
- Caliber: .300 Weatherby Magnum
- Material: Brass
- Condition: New, Unprimed
- Primed: No
- Case Type: Belted, bottleneck with double-radius shoulder
- Primer Size: Large Rifle Magnum
- Bullet Diameter: .308 in
- Quantity Per Box: 50
- Country of Origin: United States
What’s Included
- 50 new unprimed .300 Weatherby Magnum brass cases
Frequently Asked Questions
Do these Hornady .300 Weatherby Magnum cases come primed?
No, these are unprimed cases. You'll source your own large rifle magnum primers and add them as part of your reloading process. That gives you full control to pair the brass with the primers, powder, and bullets that work best in your rifle.
Will this brass work in any .300 Weatherby Magnum rifle?
These cases are formed to the cartridge's proprietary double-radius Weatherby shoulder, so they're made for chambers cut to .300 Weatherby Magnum dimensions. Any rifle properly chambered for the .300 Weatherby Magnum will accept them. As always, confirm your rifle's chambering before loading.
How many reloads can I expect from Hornady .300 Weatherby brass?
Hornady builds these cases with uniform wall thickness and holds tight tolerances, which tends to translate into good case life. With sensible charges and regular trimming and care, reloaders often report getting a solid number of firings per case. Keeping your loads within safe pressure helps brass last longer.
What bullets and primers should I use with these .300 Weatherby cases?
The .300 Weatherby Magnum uses .308-inch diameter bullets and large rifle magnum primers. Popular weights run from 150-grain bullets for lighter game up to 180, 200, and 220-grain bullets for larger animals and long-range work. Match your bullet weight and powder to your intended game and your rifle's twist rate.





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