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9mm Browning Long

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Title: 9mm Browning Long  
Author: World Heritage Encyclopedia
Language: English
Subject: John Browning, Colt Model 1903 Pocket Hammerless, Remington Model 24, Colt Woodsman, Colt Model 1903 Pocket Hammer
Collection: Military Cartridges, Pistol and Rifle Cartridges
Publisher: World Heritage Encyclopedia

9mm Browning Long

9×20 mm Browning Long
Type Semi-automatic pistol
Place of origin  Belgium
Production history
Designer John Moses Browning
Designed 1903
Manufacturer Fabrique Nationale de Herstal
Case type semi-rimmed, straight
Bullet diameter .3578 max. (9.09mm max.[1])
Neck diameter .379" nom. (9.68mm max.[1])
Base diameter .380" nom. (9.72mm max.[1])
Rim diameter .404 in (10.3 mm)
Case length 20 mm (0.79 in)
Overall length 1.10 in (28 mm)
Primer type Small pistol
Ballistic performance
Bullet weight/type Velocity Energy
110 gr (7 g) FMJ 1,000 ft/s (300 m/s) 240 ft·lbf (330 J)
Source(s): Rifles and Machine Guns [2]

The 9×20 mm Browning Long is a military centerfire pistol cartridge developed in 1903 for the 9 mm Browning pistol adopted by Belgium, France, the Netherlands, and Sweden.[3] The cartridge headspaces on the rim. Ammunition was produced in Belgium, France, England, Sweden[4] and the United States. There was some production in Germany during World War I for the Ottoman Empire, and the cartridge was also used in South Africa.[5]

The cartridge is now obsolete and it is hard to find reloadable brass for this ammunition; one option handloaders have is to take the .38 Super and shorten it to the right length.

Prvi in Serbia currently manufactures ammunition. The Prvi bullet weighs 7 grams (108 gr.), the diameter is listed @ 0.3585" and the velocity is listed @ 350 m/s (1148 fps). CIP lists bullet maximum @ 9.09mm (0.3578"). CIP barrel dimensions are 0.351" for minimum bore diameter, and 0.359" for minimum groove diameter.[1][6]

There is reloading data available on a few websites[7] and in some handloading manuals, e.g. the Norwegian Ladeboken.[8] Ladeboken:

  • Powder: 4.5 grains N340.
  • Bullet: 110 grains Norma J
  • Length: 1.09 in
  • Velocity: 815 ft/s (248) m/s

See also


  1. ^ a b c d
  2. ^ Melvin, M., Capt., USMCR. Rifles and Machine Guns, p.385. New York,: William Morrow & Company, 1944.
  3. ^ Janson, O. "Browning pistol M1903 becomes Swedish Pistol m/1907"
  4. ^ Janson, O. "Equipment, holsters and ammunition for m/1907"
  5. ^ Wilson, R. K. Textbook of Automatic Pistols, pp.237–238. Plantersville, S.C.: Small Arms Technical Publishing Company, 1943.
  6. ^
  7. ^ 9mm Browning Long loading data at Gun Loads web site
  8. ^ Ladeboken web site
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