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7.62 X 37 H & K

This was developed at Radway Green at the request of Heckler & Koch, who were developing a rifle for silenced combat. They had previously studied the .300 Whisper cartridge but decided to develop their own as well, by shortening and necking-up the 5.56x45 case....

41 SPECIAL

The 41 Special is a shortened version of the 41 Magnum, in the same vein as the 44 Special is a lighter version of the 44 Magnum. With the development of the 41 Magnum in 1964, the idea was to have two different strength loadings for law enforcement and civilian use...

450 No.1 BLAND

British development for a revolver by the firm Thomas Bland & Sons, which had offices in London and Birmingham with cartridges made for them by Eley. The shape of the bullet is the same as for the 476 Enfield Mk. 3 (Erlmeier, Brandt Ref. 453)   

10.6mm SCHULHOF

This was a design by Josef Schulhof (1824 - 1890), gunmaker from Vienna. He patented a repeating rifle in 1882 and was credited with having developed several types of repeating pistols around 1884. All required a manual movement to chamber and discharge the cartridge....

24 NOSLER

The 24 Nosler was designed by Mike Lake, who is the Senior Manager of Engineering and R&D at Nosler. He was also responsible for the development of the 26 Nosler (2013), 28 Nosler (2015), 30 Nosler (2016), and the 33 Nosler (2017), all of which are based on the...

303/55 BOYS XPL

With the introduction of the 55 Boys, it also became necessary to consider the development of suitable training ammunition. There were fears that firing the Boys on normal ranges exceeded safety standards and could penetrate the backstops and increase the danger area...

300 WHISPER

The history and development of the 300 Whisper/Blackout have been discussed HERE.The AAC 83 headstamp in 5.56x45 and 7.62x51 was a made by Igman of Yugoslavia for Nordac Manufacturing Corp. (NMC) in Fredericksburg, Virginia, and the initials stand for "American...

375 WHISPER

According to the SSK website, a “Whisper®” cartridge must be capable of sub-sonic extreme accuracy with very heavy bullets for its caliber. The 375 Whisper is based on the 7mm Bench Rest case together with the 338 and 416 caliber to convert 308 case head size actions...