8mm Mauser ammo, 8x57mm JS, is a centerfire, rimless, bottle necked, .323 caliber, rifle cartridge originally adopted by the German military in 1888 and it continued to serve the German military through WWII.
In 1905, the chamber pressure and bullet diameter was increased to .323". The larger bore diameter isdesignated as "JS" and should not be fired in the older model 1888 Mauser rifle, but is safe to fire in the Model '98 Mauser with the correct bore diameter.
After World War II this rifle was brought into the U.S. and the popularity of the rifle excelled since it had the ability to shoot a wide range of bullet weights ranging from 125 grain to 227 grain at muzzle velocities ranging from 2,300 to 3,000 feet per second making the 8mm Mauser great for hunting.
Origin Country: Romania
Type: JS Mauser
Caliber: 8x57 mm, 8mm
Bullet type: Full Metal Jacket, FMJ
Lacquered steel case
20 Rounds per Box
Muzzle Velocity: 2360 FPS
Muzzle Energy: 2100 Feet per Pounds