Yes quite an amazing weapon. In a book that I have (German Aircraft Guns and Cannons, by Edward J. Hoffschmidt, We Inc. Old Greenwich, Conn. 1969), it gives the 'rate of fire' at 36,000 rounds per second! With either a 7 or 9 cartridge case.
The firing of the weapon must have been impressive, to say the least! And so long as the range precluded any chance of a miss, it must have been lethal!
I can't find anything that references if all 10 guns fired simultaneously or where selectable! Was this a gun that given even inexperienced pilots, once fired a 'kill' was almost certain?
This 'shotgun' concept also appears in the Rheinmetall SG 117, SG 118 and
SG 119. Where these guns compensating for the speed of the aircraft or the quality of the pilots, or both?
Dennis