Quite an amazing find really.What a cracker! I don't think the "B&C" connection is to long a bow to draw.
(if it looks like a Bussey and cocks like a Bussey and barks....)
With that roundabout cocking arrangement it's unlikely to stand for "Bonnie & Clyde".
Vintage Airguns Gallery
..Above link posted with permission from Gareth W-B In British slang an anorak is a person who has a very strong interest in niche subjects.