The .404 Jeffery, also known as the .404 Rimless Nitro Express, is a large-caliber rifle cartridge explicitly designed for big-game hunting in Africa. It was introduced by W.J. Jeffery & Co in 1905. The cartridge typically uses a .423-inch (10.75 mm) diameter bullet and is renowned for its effectiveness in taking down dangerous game such as elephant, rhino, and Cape buffalo.
The .404 Jeffery can propel a 400-grain bullet at velocities around 2,150 feet per second, producing significant stopping power. It is prized for its manageable recoil compared to other big-game cartridges like the .416 Rigby and the .458 Winchester Magnum, making it more user-friendly for extended use in the field.
The cartridge’s design, featuring a rimless case with a moderate taper, contributes to reliable feeding in bolt-action rifles. This reliability, combined with its stopping power and balanced recoil, has ensured its continued popularity among professional hunters and enthusiasts alike.