25.4x148B for Solothurn S19-100


#1

In a report on the history of Solothurn Waffenfabrik I have found this drawing of a 25.4x148B cartridge which was described as having been for the S19-100 gun.
As the caliber is exactly 1" I wonder if the caliber was a requirement of a potential customer maybe. Here in particular Argentina as they are known to have adopted a 1" Vickers AA gun (for their navy). Maybe the S19-100 was a competitor?

Is there more info on the gun or the ammunition? Any photos available?


#2

There are no photos of the gun or ammunition that I’m aware of, but there is some more information (given in the July ECRA Bulletin, item 639-10, from Robert Gerber). The HE shell shown weighed 280g, there was also an AP which weighed 300 g, no muzzle velocities known.

The gun was recoil-operated and fed by a side-mounted 16-round box magazine at a cyclic rate of 250 rpm. As mentioned in Musgrave (German Machineguns) three mountings were proposed: S20-100 (light infantry mount); S20-200 (portable tripod mount) and S20-300 (twin AA mount. None of these was built.


#3

Tony, thanks. After having seen several Solothurn product brochures from this time period I hoped somebody would have one available on the S19-100 somewhere.

I wonder if it is some upscaled version of the 20mm gun.

Seems this gun is a small mystery.