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9mm Browning Long

Pistol cartridge designed by John Moses Browning From Wikipedia, the free encyclopedia

9mm Browning Long
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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.[6]

Quick facts 9×20mmSR Browning Long, Type ...
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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[7] 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.[8]

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.[9] It is also currently manufactured by Mechanical and Chemical Industry Corporation of Ankara.

There is reloading data available on a few websites[10] and in some handloading manuals, e.g. the Norwegian Ladeboken.[11] 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)
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