This is .7mm Weatherby Magnum 154gr. Spire Point Ammo. 7mm Weatherby was introduced nearly 20 years before the popular 7mm Remington Mag., the Weatherby version gives non-handloaders handloaded 7mm magnum performance. Delivers 400 fps more velocity than the 7mm Mauser. Ballistically similar to the .270 Weatherby Magnum with a larger selection of bullet weights, this cartridge is well-suited for any North American game as well as thin-skinned African game. This ammunition is new production, non-corrosive, is boxer primed, and has reloadable brass cases. This ammo comes packed in 20rd. boxes.