Quote Originally Posted by AdeC View Post

I've read somewhere that the Webley mkVI shells are the same
Yep, was me that posted that on another thread a month or so ago, and notwithstanding the writing around the cartridge lips (Webley or Schofield), both the pellet cartridges and both the BB cartridges (and speed-loaders) for both the aforementioned pistols are exactly the same and fully interchangeable.