Austro-Hungarian military pistol cartridge for the Steyr M1912 (Steyr-Hahn). Longer case than 9mm Luger, loaded stripper-clip style into a fixed magazine. High quality cartridge with good performance by WWI standards.
Type: Pistol
Introduced: 1912, Austria-Hungary
Parent case: None
Standardization: None
Bullet diameter: 0.355" (9.02 mm)
Case length: 0.9" (22.86 mm)
Overall length: 1.3" (33.02 mm)
Max pressure: 30,000 PSI
Rim type: Rimless
Primer: Small Pistol
Typical twist rate: 1:10
Muzzle velocity: 1110–1165 fps
Muzzle energy: 317–350 ft-lbs
Effective range: 50 yd
Common bullet weights: 116 gr
Primary use: Military
Production status: Discontinued
Also known as: 9x23mm Steyr · 9mm Steyr-Hahn
History: Adopted by Austria-Hungary in 1912 for the Steyr M1912 pistol. The fixed-magazine stripper-clip design was considered safer for military use than detachable magazines. Romanian forces captured large numbers of M1912 pistols in WWII and re-barreled them for 9mm Luger — original 9mm Steyr pistols are marked '08' to indicate the conversion. Original 9mm Steyr ammunition is collector-grade; modern…
Notable firearms: Steyr M1912 (Steyr-Hahn), Steyr M1912/P16
Military use: Austria-Hungary, Romania (WWII, converted)
Similar cartridges: 9mm Luger, 9mm Largo