yes, was manfred zwecker, have it but its laying under other stuff for years now.

also thinking you are close to the beginning of the pinfire history with this cases as possible.
this was, btw, the dreyse tool to remove the rest of the paper cartridge

did you see my latest invention
part 1 http://forums.nitroexpress.com/showflat.php?Cat=0&Number=324441&an=0&page=1#Post324441

part 2 http://forums.nitroexpress.com/showflat.php?Cat=0&Number=327948&an=0&page=0#Post327948

plan was to use the 4 ga. for goose hunting in autumn 2019 but a surgery has upset my plans so waiting for next season in 2020.