9mm Browning Long

9×20mmSR Browning Long
TypeSemi-automatic pistol
Place of originBelgium
Production history
DesignerJohn Moses Browning
Designed1903
ManufacturerFabrique Nationale de Herstal
Produced1903–1940s[1]
Specifications
Case typeSemi-rimmed, straight
Bullet diameter.3578 in max. (9.09 mm max.[2])
Land diameter.3512 in nom. (8.92 mm max.[2])
Neck diameter.379 in nom. (9.68 mm max.[2])
Base diameter.380 in nom. (9.72 mm max.[2])
Rim diameter.402 in (10.2 mm)
Rim thickness.0492 in (1.25 mm)
Case length.795 in (20.2 mm)
Overall length1.10 in (28 mm)
Primer typeSmall pistol
Ballistic performance
Bullet mass/type Velocity Energy
110 gr (7 g) FMJ 1,000 ft/s (300 m/s) 240 ft⋅lbf (330 J)
108 gr (7 g) FMJ 1,150 ft/s (350 m/s) 316 ft⋅lbf (428 J)
Source(s): Rifles and Machine Guns [3] Prvi Partizan [4]

The 9mm Browning Long, also known as the 9×20mmSR, is a military centerfire pistol cartridge developed in 1903 for the FN Model 1903 adopted by Belgium, France, Estonia, the Netherlands, and Sweden.[5]

Description

9mm Browning Long is similar to 9×19mm Parabellum, but has a slightly longer casing and is semi-rimmed; the cartridge headspaces on the rim. The cartridge was developed by FN to be used in the blowback-operated Model 1903, a pistol designed using the same Browning patent as the Colt 1903. Using a more powerful cartridge, such as the 9×19mm Parabellum, would have required a locked-breech design. Ammunition was produced in Belgium, France, England, Sweden[6] 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.[7]

The cartridge is now regarded as obsolete and it might be 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.[citation needed]

Prvi Partizan in Serbia manufactures 9mm Browning Long ammunition. The Prvi full metal jacket bullet weighs 7 grams (108 gr.) with a muzzle velocity of 350 metres (1,150 ft) per second.[8] It is also currently manufactured by Mechanical and Chemical Industry Corporation of Ankara.

There is reloading data available on a few websites[9] and in some handloading manuals, e.g. the Norwegian Ladeboken.[10] Ladeboken:

  • Powder: 4.5 gr (0.29 g) N340
  • Bullet: 110 gr (7.1 g) Norma J
  • Length: 1.09 in (2.8 cm)
  • Velocity: 815 ft/s (248 m/s)

See also

References

  1. ^ 9X20 browning long. Modern Firearms. (n.d.). https://modernfirearms.net/en/cartridge/9x20-browning-long/
  2. ^ a b c d "C.I.P. TDCC datasheet 9 mm Browning long" (PDF). CIP. September 23, 2008.
  3. ^ Melvin, M., Capt., USMCR. Rifles and Machine Guns, p.385. New York,: William Morrow & Company, 1944.
  4. ^ Prvi Partizan
  5. ^ Janson, O. "Browning pistol M1903 becomes Swedish Pistol m/1907"
  6. ^ Janson, O. "Equipment, holsters and ammunition for m/1907"
  7. ^ Wilson, R. K. Textbook of Automatic Pistols, pp.237–238. Plantersville, S.C.: Small Arms Technical Publishing Company, 1943.
  8. ^ "9mm Browning Long". prvi partizan. Retrieved 31 October 2023.
  9. ^ 9mm Browning Long loading data at Gun Loads website
  10. ^ "Ladeboken web site". Archived from the original on 2020-10-28. Retrieved 2010-08-15.