The proprietor of the excellent Wilkinson Fighting Knives Collection shared a  review on a commercial variant of the Webley MkI .455 automatic pistol.  These are pretty rare guns, and he includes a shooting review also.  You can find the review on this page.

The Webley MkI Autoloading Pistol

 

Harry Schlund was the works manager of the Knoch Gun Works, a firm that rose from William Tranter's factory after he retired.  Harry kind of inherited the business from George Kynoch and it became the Aston Arms Company.  Schlund invented this revolver and it went through a few iterations, had some Tranter features, but others were his own, and was a solid, if odd, revolver.  

Schlund Revolver

The Schlund Revolver, image from Adams Guns

The pistol was free of obstructions and could be carried in a pocket, and produced without snagging on clothing.  It had a sturdy break open action and would discharge empty casings like a Webley.  The trigger was the difference, and it had a double action trigger of sorts.  The lower part cocked the hammer, which could then be de-cocked, and the upper released the sear, firing the revolver.  To be double action, both triggers have to be pulled at once.  Only about 600 were made before Schlund went out of business, and these revolvers bring around three grand today.  They can be found in many calibers, but this one is in .476.  This revolver is available at Adam's Guns.

Schlund Revolver