The 416 Taylor was developed by Robert Chatfield-Taylor in 1972. It is based on the 458 Winchester Magnum case necked-down to 416 caliber. The cartridge has been used in Africa with very favorable reports on it. It was also checked out on Cape buffalo, elephant and lion by several hunters with success. The 416 Taylor is ballistically similar to the 416 Rigby and is adequate for the same range of game, including the tough, dangerous African varieties. It is overpowered for most North American big game, but would be good backup against brown bears. 

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