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Pistol · Not SAAMI standardized · CIP standardizedObsolete

9mm Steyr

Also known as 9x23mm Steyr · 9mm Steyr-Hahn

Austro-Hungarian military pistol cartridge for the Steyr M1912 (Steyr-Hahn).

Caliber
0.3555″ · 9.03 mm
Introduced
1911
Case
Rimless
Primary use
Military
Status
Discontinued
Obsolete
Obsolete

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VelocityBeing verified
EnergyBeing verified
Typical grains115 · 116 gr
Identity
Introduced
1911
Type
Pistol
Origin
Austria-Hungary
Inventor
Steyr-Mannlicher
Manufacturer
Österreichische Waffenfabriks-Gesellschaft (Steyr)
Standard
Not SAAMI standardized · CIP standardized
SAAMI
Not SAAMI standardized
Obsolete
Obsolete
Status
Discontinued
Availability
Collector
Build
Case capacity
18 gr H₂O
Twist (typical)
1:10
Primer
Small Pistol
Case type
Rimless
Pressure & range
Max pressure
19,580 psi, CIP transducer
Eff. range
50 yd
Max range
1600 yd
Recoil
5–5.2 ft·lb
Subsonic
Capable

Ballistics

Published velocity/energy data isn't available for 9mm Steyr — an obsolete/collector cartridge.

Performance

Best for Withheld until verified
Best for Withheld until verified
Dimensionscase measurements · scale drawing · size vs familiar rounds

Case dimensions — the scale drawing at the top of the page is built from these.

CIP TDCC · verified
Measuremmin✓
Bullet ⌀ 9.030.356 ✓
Neck ⌀ 9.620.379 ✓
Shoulder ⌀ n/a
Shoulder angle n/a
Base ⌀ 9.700.382 ✓
Rim ⌀ 9.700.382 ✓
Belt ⌀ n/a
Rim thickness 1.250.049 ✓
Neck length n/a
Case length 23.200.913 ✓
Overall length 33.101.303 ✓

Size vs familiar rounds

Drawn at true 1:1 — every case is accurate relative to the others. Absolute size depends on your screen's pixel density, so measuring one against a real ruler may be off. 9mm Steyr is highlighted below.

Factory loads

Verification

Being verified

Advertised FPS, energy, and BC are withheld until loads clear verification.

Reloading costestimate cost per round vs factory

Estimate your cost per round and how it compares to factory. Inputs are yours — nothing is stored.

Cost estimate only — not load data. Charge weight is your input; follow published manuals for safe charges.

Firearms chambered in 9mm Steyr

Various Spanish Star Model B 9mm Largo 5.1-inchAstra 400Astra-Unceta Astra 400 Model 1921 9mm LargoVarious Spanish Astra 400 9mm Largo 5.9-inchSteyr Steyr M1917 9mm PistolSteyr Steyr-Hahn M1912Steyr Steyr M1912 Navy Pistol 9mmSteyr-Hahn Steyr M1912 9mm Steyr 5.1-inch Austro-HungarianSteyr M1912Steyr Steyr Hahn M1912 HungarianSteyr Steyr M1912 9mm SteyrSteyr Hahn M1912 9mm Steyr

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 reproduction brass is available.

FAQs

What twist rate does 9mm Steyr use?
9mm Steyr typically uses a 1:10 twist rate.
What bullet diameter is 9mm Steyr?
9mm Steyr uses a 0.3555″ (9.03 mm) diameter bullet.
Is 9mm Steyr still in production?
9mm Steyr is discontinued; typical availability is collector.
What is 9mm Steyr used for?
9mm Steyr is primarily used for military.

Sources & provenance

Data & sources. Specs compiled from the Lindcott Armory reference; availability counted from 6 live factory loads; the trajectory is modeled (point-mass), not measured. See methodology. Spotted an error? Report it →

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