Introduced by DWM (DWM   K Y  5.6x50R MAG) in 1966 and was designed by Günter Frères of IWK/DWM for Friedrick W Heym. The cartridge was generally thought to have been introduced in 1968 even though the DWM “K-Y” date stamp indicates 1966 production. The cartridge was based upon test results of the evaluation of the 5.6x47R was effectively a rimmed version of the 222 Remington Magnum. It has been adopted by the majority of current European cartridge manufacturers.
The 6x50R Scheiring is a necked up 5.6x50R MAG case.