RUAG Efficiency Line 7.65 Para, 92 gr, FMJ Ammunition
$39/box or $740/case
In 1897, the C-93 Borchardt pistol was submitted for testing to the Swiss Military Trials Committee. The committee found the Borchardt too heavy and unwieldy to serve as a military sidearm. Georg Luger was asked by DWM to improve upon the Borchardt pistol. He developed the 7.65×21mm Parabellum cartridge from the 7.65×25mm Borchardt. By shortening the cartridge case, Luger was able to design a narrower grip, and the toggle action required a shorter stroke than in the original Borchardt design. A transitional Borchardt-Luger model in the new caliber was submitted to the Swiss commission in 1898. After further improvements, the final result became the DWM Pistole-Parabellum ("Luger pistol"). The loading for the new cartridge was standardized and mass production began in 1900–1901 in DWM's factory in Karlsruhe, Germany.
Around 1903, a separate load was developed for Parabellum carbines, with about 20% more powder (increased from the standard 0.32–0.35 g to 0.40 g) and a blackened cartridge case. This carbine load was manufactured until sometime after World War I.