We hashed this over not too long ago.
I agree that the .333 Flanged would be great fun in a No.1
From the conversation, it seems plausable that .333" bullets can be made from just about any .338" projectile, so sounds like a very doable little project.
I also agree that the .333 Flanged sounds very Farqish but in reality, an original Jeffery Farquharson in .333 is a very rare rifle indeed.