Hi Mehulkamdar,

Holland&Holland has build at least a pair of doubles a couple of years ago and Hartmann&Weiss has build one rifle on a falling block Hagn action for this cartridge. If anyone can help me on posting pictures, I can post the H&W one. I have also pictures of the H&H double but they are paper prints.
I doubt that Wolfgang Romey is offering this cartridge, but I will check when I see him on friday the 11.
Robert