.340 Weath. Mag. Load Data & Reloading Guide

The .340 Weatherby Magnum was introduced in 1963 by Weatherby as an answer to hunters seeking a powerful, flat-shooting cartridge for large game. It was developed by lengthening and necking down the .375 H&H Magnum case, maintaining Weatherby's tradition of creating cartridges that deliver superior velocity and energy. This caliber quickly gained popularity among hunters who required a hard-hitting round capable of taking down game at long distances.

This cartridge's key technical characteristics include a case length of 2.825 inches and a shoulder angle of 25 degrees, which contribute to efficient powder combustion and high muzzle velocities. Typical bullet weights range from 200 to 300 grains, with the 250-grain spire point being popular for its balanced trajectory and energy retention. With velocities exceeding 2900 feet per second for heavier bullets, the .340 Weatherby Magnum offers impressive ballistic performance, making it suitable for hunting large and dangerous game.

In practical applications, this caliber is favored for long-range hunting in open terrains where its flat trajectory shines. It has been used effectively on game such as elk, moose, and even African plains game. For those engaging in competitive shooting or long-range marksmanship, its impressive energy delivery and accuracy make it a viable yet less common choice.

Reloaders appreciate the .340 Weatherby Magnum for its versatility in bullet selection and the ability to fine-tune loads to specific hunting needs. The robust case capacity allows for experimentation with various powder types and weights, while the cartridge's reputation for consistent accuracy adds to its appeal. With quality components and careful load development, reloaders can optimize for both precision and performance, ensuring reliability in challenging hunting situations.