The 270 Weatherby Magnum was developed by Roy Weatherby in 1943. It�s case is based on a necked-down 300 H&H; case. The popularity of the 270 Winchester made it almost mandatory for Weatherby to include this caliber in his line of commercial magnum rifle cartridges. The 270 Weatherby Magnum has been used extensively, and successfully, on all species of North American big game. It has also achieved notable success on African plains game. It is a very fine choice for the hunter who wants to include varmint-hunting potential in a big-game rifle. It has been one of the most popular calibers that Weatherby offers. 

This text is based on information from “Cartridges of the World”, Hodgdon reloading manual, the cartridge designer and/or own resources.