I have found these images in the web which were labeled “Swiss 7.65mm Amsler”. No other info was given.
Obviously experimental stuff.
As per the design of that irregular shaped case it appears like something along the Dardick-Tround system with open and rotating chambers.
The cylindrical one seems to have an adaptor inside the case neck and is basing on a draw stage of a 7.5x55 case…
Anybody to tell more about these?
Is the case length known?
Do better images, diagrams or reports exist?