| 8mm Roth–Steyr | |
| Origin: | Austria-Hungary |
| Type: | Pistol |
| Is Si Specs: | yes |
| Case Type: | Rimless, straight |
| Bullet: | 8.16 |
| Neck: | 8.80 |
| Base: | 8.85 |
| Rim Dia: | 8.85 |
| Case Length: | 18.65 |
| Length: | 29.00 |
| Bw1: | 116 |
| Btype1: | FMJ |
| Vel1: | 1088 |
| En1: | 302 |
| Bw2: | 113 |
| Btype2: | FMJ |
| Vel2: | 1070 |
| En2: | 290 |
| Balsrc: | "Textbook of Automatic Pistols" [1] |
The 8mm Roth–Steyr is a military centerfire pistol cartridge adopted by the Austro-Hungarian cavalry in 1907 for the Repetierpistole M7—the first self-loading pistol adopted by a major military power. The cartridge headspaces on the mouth of the case. Ammunition was typically packaged in a unique ten-round charger. Austrian military production contained greased un-plated steel-jacketed bullets. A few private firms in Austria manufactured ammunition with cupro-nickel-jacketed bullets.[1]