Craig Boddington was the senior contributing editor of our modern gun and ammunition caliber dictionary. Craig was involved in the development and testing of many of these and writes from first hand experience. This dictionary was written exclusively for Wholesale Hunter with unique information found nowhere else.
GUN CALIBER DICTIONARY
Handgun
9mmX18mm Ultra Police
The 9mmX18mm Ultra 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. — LG Outdoors