on my last hunting expedition was the .416 Bore Magazine Rifle you supplied me with. I cannot speak too highly of it. Its stopping power was extraordinary, and the fact that all the lions, rhino, buffalo, etc., were shot at comparatively short range, and no other rifle to back me up, speaks volumes for the accuracy and efficiency of your rifle." Today the .416 Rigby is favored by professional hunters and safari guides in Africa. While considered overpowered for the big cats, the .416 is regularly used for the hunting of these felines. In African nations which have enforced a ban on the use of sub rifle cartridge for dangerous game, the .416 Rigby can be considered for the hunting of lion or leopard. Prior to the ban on hunting in India, the .416 Rigby was successfully used to hunt dangerous game there which included the Bengal tiger, Indian rhino, and elephant. As a parent cartridge The .416 Rigby cartridge case is of a unique design in that it had no prior cartridge case acting as a parent cartridge during its development. Due to the volume of the case, the .416 Rigby case has gone on to act as a parent cartridge to several modern cartridges and provide the inspiration to many others. The .378 Weatherby Magnum family of cartridges which include the .30-378, .338-378, .378, .416 and the .460 Weatherby Magnums use a case similar to the .416 Rigby albeit with a belt added to the case design. The .416 Rigby is the parent cartridge for the following cartridges: .300 Lapua Magnum The .300 Lapua Magnum cartridge was designed by Lapua of Finland using the .338 Lapua Magnum case which in turn was based on the .416 Rigby. Lapua does not manufacture ammunition for the cartridge and it should be considered a wildcat cartridge. .338 Lapua Magnum The .338 Lapua Magnum cartridge is a redesign by Lapua of a prior designed by Research Armament Industries (RAI) and Brass Extrusion Labs Ltd. (BELL) known as the .338/416. The Lapua uses a modified .416 case shortened and necked down to accept a bullet. The cartridge is capable of firing a bullet at . .450 Dakota The .450 Dakota was designed by Don Allen of Dakota Arms. It is virtually identical to the .450 Rigby which it predates by a few years. The cartridge is based on the .416 Rigby necked up