Assumed to be designed by Brenneke (although unconfirmed) and introduced by DWM in 1928 as a competitor to the British 375 H&H cartridge and based on the 10.75×73 (404 Jeffery) case. The original DWM 569 cartridges are exceedingly rare. The specimen below is a proof loading with rim notch. During the early years of the 20th century there was a mini “sporting arms race” between the British and the Germans in Africa, as both had a fairly large presence in East Africa and both competing for the growing big game safari industry in Africa. The British prided themselves in their high quality double rifles, while the Germans had their drillings, which were not a huge success in Africa, but they competed by way of the very high quality Mauser bolt action rifle. The German workhorse was the 9.3×62 but, although a very good cartridge was still considered under powered for Africa where an outfitter might need a single rifle for plains game but also to provide protection to a client should the situation arise. The 9.3×70 Magnum was the only larger powered cartridge that was produced out of a batch of German experimental calibers based on the 404 Jeffery in an attempt to create a rifle to fulfill that role. Herman Goering owned a rifle in this caliber that was made by Berlin gunsmith Ludwig Schiwy. The 9.3×70 Magnum suffered the same fate as most other German sporting cartridges at the start of WW2.

The bottom specimen is a modern manufactured cartridge by Horneber for Reimer Johanssen GmbH Germany