9×18mm Ultra

Type

Pistol

Place of origin

Germany

Service history

Used by

West German Police

Production history

Designed

1936

Specifications

Case type

Rimless

Bullet diameter

9.01 mm (0.355 in)

Case length

18.288 mm (0.7200 in)

Primer type

Berdan or Boxer small pistol

Ballistic performance

Bullet mass/type	Velocity	Energy
6.09 g JFP	320 m/s (1,000 ft/s)	312 J (230 ft·lbf)
6.48 g JFP	323 m/s (1,060 ft/s)	338 J (249 ft·lbf)

Source(s): guns.ru - Ammunition for submachine guns and handguns

The 9×18mm Ultra is a German pistol cartridge.

It was originally developed in the 1936 for use by the Luftwaffe, but was not adopted at that time. In the 1972-1973 time frame, Walther introduced the Walther PP Super chambered in the cartridge for the West German Police. The Walther PP Super was discontinued in 1979. The cartridge was made available to the civilian market in 1975.

In addition to the Walther PP Super, the SIG Sauer P230,Mauser HSc-80, and Benelli B76 were also produced in 9×18mm Ultra.

The 9×18mm Ultra (.355-inch caliber) is not interchangeable with the 9×18mm Makarov (.365-inch caliber), as the latter uses a larger diameter bullet.

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Wikipedia