Hi Guys

Just for the record, I own a converted .410 double shotgun made by Midland Gub Co. in Birmingham between the wars. It is a top lever hammer gun. It was converted by a brilliant English gunsmith for his own use about seven years ago. Just before he died he allowed me to buy it from him. Is has the original barrels, now 25.5 inches long, and which have been linered using old SMLE .303 barrels (anti-clockwise rifling) and chambered for .32-20. Hence no problem with firing pins.

It is the hungriest gun I own - every time I go to the range someone will say 'Please can I fire a few shots?' It regulates nicely with normal subsonic loads. If I increase velocities to about 1900 fps the right barrel is OK, but the left shoots WAY to the left. Great fun.

Good luck with your project!