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Peterson Cartridge Introduces .270 Weatherby Magnum

270 Weatherby MagnumPittsburgh, PA (February 2022) – Peterson Cartridge Co. of Pittsburgh, PA announces the addition of .270 Weatherby Magnum to its growing family of rifle casing calibers.

It has been called the ultimate long-range deer caliber and a .270 Winchester on steroids.  When Roy Weatherby began developing his belted magnum calibers in 1943 this was his first.  Based on the .300 H&H Magnum and sporting the characteristic Weatherby double radius shoulder, it was necked down to accommodate the .277 bullet.  Its average gain of about 200ft/s over other .270 calibers make it an excellent choice for long-range hunting of medium size game including deer, elk, and pronghorn.


Derek Peterson, president of Peterson Cartridge explains, “To emphasize the importance Roy Weatherby placed on the .270 Weatherby Magnum you need to remember that it was the first magnum cartridge he developed.  Everything else followed from there.  A lot of people do not know this but the first Weatherby cartridge used in Africa was a .270 Weatherby Magnum used to harvest a jackal back in 1948.  When we decided to pair our casings with such an iconic caliber, we couldn’t wait to see the result.  We know what we think of it, but we want to hear from you, so load some up and let us know how we did.”

About Peterson Cartridge

Peterson Cartridge is a family-owned, American manufacturer of match-grade, brass rifle casings and loaded ammunition that is among the most precise and consistent on the market, delivering discerning long-distance shooters sub-MOA accuracy.  For more information on Peterson Cartridge or to purchase its match-grade brass casings, or loaded ammunition, visit

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