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7mm Weatherby Magnum

Developed by Roy Weatherby in the 1940’s and becoming commercially and culturally popular in the 1950’s, the 7mm Weatherby Magnum is considered one of the best one-rifle cartridges for long distance shooting. One of the original belted magnums it has the characteristic Weatherby double radius shoulder and is ideal for large game such as grizzly, brown bear, moose, and bison. It is also perfectly suited for African and Australian plains game. The 7mm Weatherby Magnum is an ultra-high velocity cartridge best used with barrels with a 1x10 twist rate.

“When people think of big rifle cartridges this is one that comes to mind,” explains Derek Peterson, president of Peterson Cartridge. “I would argue that it is also perhaps the most versatile. It can be used in the whitetail woods of Pennsylvania, chasing elk in the Rockies, or stalking kudu on the Serengeti. We felt that producing brass casings for such an adaptable caliber would benefit hunters around the world. Try some for yourself and let us know how we did.”

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Additional Information

Warning: Only use Peterson Cartridge Co. casings in firearms in good condition, designed, marked, and chambered for this cartridge. Do not use Peterson Cartridge Co casings for “fire forming” or any other purpose other than what they were designed and tested for. Peterson retains no responsibility for the enclosed casings if they are used outside of the manufacturer’s recommendations.

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Extremely consistent, American-made brass rifle casings and ammunition, designed for long-distance shooters.