The 8x57R Mauser, also known as the 8x57mm Rimmed, is a rifle cartridge similar to the 8x57mm IS (commonly known as the 8mm Mauser), but with a rimmed case for use in break-action rifles and combination guns. It was introduced in the late 19th century and is primarily popular in Europe.
The cartridge typically features a bullet diameter of 8.2mm (.323 inches) with a case length of 57mm. The rimmed design makes it suitable for use in single-shot and double rifles, as well as drilling guns, which combine shotgun and rifle barrels.
Use cases for the 8x57R Mauser include hunting medium to large game such as deer, boar, and bear. It offers good ballistic performance with sufficient velocity and energy for these purposes. The cartridge's design also facilitates reliable extraction in break-action firearms, which is an important consideration for hunters.
Overall, the 8x57R Mauser is valued for its versatility, ease of reloading, and effectiveness in various hunting scenarios.