The cartridge and it's development, the timeline - I'm interested in seeing whatever our friends here can show.

I'd found this rifle, and I was surprised when I had cast the chambers. Very little clearance for case walls.



I'd contacted the maker to ask about some things, including the chambers and the Purdey mentality on cartridge case design from the time of the rifle's construction. Details from my learning venture are seen in this thread

I hope someone here has more to add to the story.