peter:
I'm interested in your use of the term 'rook' for a 20-bore shotgun. Does this come from some of Hollands' literature? I have only ever heard of guns chambered for low-powered lead-bullet loads from .22 to .300 calibre, in straight cases less than, say, 2 1/4 inches long, being referred to as rook rifles.

Can you shed some light on this? I'm just curious.

Very nice little single, BTW, and really heartening to see the full set of accessories with it, too. Marvellous!