7.5 Ord. Suisse Load Data & Reloading Guide

The 7.5 Ord. Suisse, commonly known as the Swiss Army 7.5x55mm, was developed in the late 19th century. Initially adopted by the Swiss military in 1889 for the Schmidt-Rubin rifle, this cartridge has undergone several modifications to improve its performance and adaptability to newer firearms. The GP90 was the original loading, followed by the more refined GP11 in 1911. This modernized version featured a spitzer bullet and modified case design, enhancing its ballistic efficiency and becoming a mainstay of Swiss military small arms.

From a technical standpoint, the 7.5x55mm Swiss cartridge features a rimless, bottleneck case design, allowing for optimal feeding and extraction in bolt-action firearms. The maximum case length is 55.6mm, and it typically uses a 0.308-0.309 inch diameter bullet. The cartridge's design focuses on delivering high muzzle velocities with excellent accuracy, with the GP11 typically firing a 174-grain (11.3 gram) projectile. The standard muzzle velocity of around 2,560 feet per second provides a flat trajectory and significant energy downrange, making it comparable to other military cartridges like the .30-06 Springfield.

For reloaders, the 7.5x55mm Swiss offers several advantages. Its robust case construction allows for multiple reloads with proper neck sizing and trimming. The cartridge's design accommodates a wide range of bullet weights, typically between 147 and 175 grains, allowing for customization depending on specific needs, such as targeting for accuracy or increased energy for hunting applications. Reloaders appreciate the cartridge's long neck, which provides good case tension and seating stability for the bullet.

In practical applications, the 7.5x55mm Swiss is favored by precision shooters and vintage military rifle enthusiasts. Its heritage as a military round translates well into competition settings such as military rifle matches and long-distance shooting sports. Additionally, with careful load development, this caliber is suitable for hunting medium game due to its adequate power and accuracy, making it a versatile choice for both historical and functional applications.