Kumpe, I think P O Stenmark or Hans Englund, Bøssmakaren AB, Klippan - Skåne can sort this out for you, Hans mounted a controlled-claw (hakmontage) on my M1910..

As for chamber, I have only fired new Kynoch/Kynamco in mine and it seems I get symptoms of cartride separation, dont yet know if the ammo is a bit off spec or if the chamber is....will look into this and try to resolve it by handloading..

The 9,5x57MS is a nice brush cartridge, I will use mine on wild boar and perhaps in Africa..

The cartridge still has a small following in RSA according to Pierre van der Walt..