The .270 Weatherby Magnum was the first of the belted Weatherby Magnum cartridges, featuring the
distinctive double-radius shoulder, introduced in 1944.
The .257, .270. and 7mm. Weatherby Magnums are all based on the .300 H&H case, blow out
and shortened to 2.545".
Current factory ammunition loaded for the .270 Weatherby Magnum in weights from 90 to 150 grains,
90 grain mores out at 3,800 F.P.S., and the 150 grain produces over 3,500 Foot Pounds of Energy!