Hello Glen,
Your correct, many of the larger 'London Gun Houses' did have their single shot rifle actions made abroad, especially in Belgium. But Britain wasn't alone in doing so. Some US 'Big Name' manufacturers did the same. E.G. The Sharps Rifle Co. advertised both 10 and 12 Bore Shotguns, all marked up with the Sharps address and the 'Old Reliable' logo. Some 230 of these shotguns were sold, yet not one saw the Sharps factory, (unless in transit elsewhere). They were all made (and engraved)in England by Philip Webley & Co. Those few who are lucky enough to own a 'Sharps' shotgun, I'm sorry to pour water on your dream of owning an 'American Shotgun' made by a very famous American gun manufacturer. Sharps never made one of them.

Harry

Biology is the only science where multiplication can be achieved by division.