8mm Roth–Steyr
The 8mm Roth–Steyr is a military pistol cartridge from Austria-Hungary. It was adopted in 1907 for the Repetierpistole M7, the first self-loading pistol used by a major military power. The round is an 8x18mm, headspacing on the mouth of the case, and it is rimless and straight. Ammunition was usually issued in a distinctive ten-round charger.
Key specifications
- Case type: Rimless, straight
- Bullet diameter: 8.16 mm
- Neck diameter: 8.80 mm
- Base diameter: 8.85 mm
- Rim diameter: 8.85 mm
- Case length: 18.65 mm
- Overall length: 29.00 mm
Ballistic performance (typical loads)
- 116 grains (8 g) FMJ: 1,088 ft/s (332 m/s); 302 ft-lbf (409 J)
- 113 grains (7 g) FMJ: 1,070 ft/s (330 m/s); 290 ft-lbf (390 J)
Ammunition and use
- The cartridge was used by Austro-Hungarian forces through World War I and into the postwar era in Italy and parts of Eastern Europe.
- Original Austrian production used greased, un-plated steel-jacketed bullets; some private firms made cupro-nickel jackets.
- The ten-round chargers for this ammunition are different from more common handgun mags and can be hard to find today.
Today, the 8mm Roth–Steyr ammunition is rare.
This page was last edited on 2 February 2026, at 14:38 (CET).