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]
| 9×20mmSR Browning Long | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | ||||||||||||
| Type | Semi-automatic pistol | |||||||||||
| Place of origin | Belgium | |||||||||||
| Production history | ||||||||||||
| Designer | John Moses Browning | |||||||||||
| Designed | 1903 | |||||||||||
| Manufacturer | Fabrique Nationale de Herstal | |||||||||||
| Produced | 1903–1940s[1] | |||||||||||
| Specifications | ||||||||||||
| Case type | Semi-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 length | 1.10 in (28 mm) | |||||||||||
| Primer type | Small pistol | |||||||||||
| Ballistic performance | ||||||||||||
| ||||||||||||
| Source(s): Rifles and Machine Guns [3] Prvi Partizan [4] | ||||||||||||
Description
edit9mm 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
editReferences
edit- ^ 9X20 browning long. Modern Firearms. (n.d.). https://modernfirearms.net/en/cartridge/9x20-browning-long/
- ^ a b c d "C.I.P. TDCC datasheet 9 mm Browning long" (PDF). CIP. September 23, 2008.
- ^ Melvin, M., Capt., USMCR. Rifles and Machine Guns, p.385. New York,: William Morrow & Company, 1944.
- ^ Prvi Partizan
- ^ Janson, O. "Browning pistol M1903 becomes Swedish Pistol m/1907"
- ^ Janson, O. "Equipment, holsters and ammunition for m/1907"
- ^ Wilson, R. K. Textbook of Automatic Pistols, pp.237–238. Plantersville, S.C.: Small Arms Technical Publishing Company, 1943.
- ^ "9mm Browning Long". prvi partizan. Retrieved 31 October 2023.
- ^ 9mm Browning Long loading data at Gun Loads website
- ^ "Ladeboken web site". Archived from the original on 2020-10-28. Retrieved 2010-08-15.