.404 Riml. N.E. Load Data & Reloading Guide

The .404 Jeffery, also known as the .404 Rimless Nitro Express or 10.75x73mm, was introduced around 1905 by W.J. Jeffery & Co., a British gunmaker. Developed for big game hunting in Africa and India, it quickly gained a reputation for reliability and effectiveness against large, dangerous animals such as elephants, rhinoceroses, and buffalos. Its design catered to the increasing demand for rimless cartridges that allowed for smoother feeding in bolt-action rifles.

Technically, the .404 Jeffery features a rimless, bottlenecked case that measures 73mm in length. It was originally loaded with cordite, a smokeless powder, to produce high velocities for its time. Standard bullet diameters are typically around .423 inches, and historically, factory cartridges were loaded with bullets weighing between 300 to 400 grains. Modern loads often produce velocities ranging from 2,150 to 2,350 feet per second, allowing for consistent penetration and controlled expansion upon impact.

Ballistically, the .404 Jeffery offers a balance between stopping power and manageable recoil, which is crucial for follow-up shots during tense and dangerous encounters. This balance makes it a favorite among professional hunters and guides across Africa. Reloaders appreciate the caliber's ability to accommodate a variety of projectile designs, including soft point, solid, and monolithic bullets, each catering to different hunting scenarios. Furthermore, modern powders allow reloaders to enhance the performance within safe pressure limits.

For ammunition reloaders, the .404 Jeffery presents several advantages. Brass cases are manufactured by several companies, making them relatively accessible. This caliber also allows for significant flexibility in tailoring loads to specific hunting requirements or personal preferences. The availability of premium bullets enhances its utility for reloading, offering options to optimize expansion or penetration depending on the game pursued. Reloading the .404 Jeffery provides the opportunity to achieve optimal velocity and energy, ensuring it remains a reliable choice for dangerous game hunting.