I cannot find it but I read a descrioption of a process to make the both barrels shoot to a point. The smith had the gun in the white. He was at a shooting range set up along with a soldering iron and soldering iron heater. The soldering iron had two rods that fit in the end of the double barrel. He would shoot both barrels onto plates (as I remember it he had five plates set up to speed the process)several times and then, using the hot iron inserted into the muzzles, soften the solder and make any necessarry changes in their relationship to each other.
I have never regulated barrels but having read what the double rifle guys go though I find it hard to believe that standard guns in Birmingham or London were not regulated to shoot to the same elevation and also to the same point in the left/right grid. I don't think they just soldered them up, cleaned them up, blacked them, and then hoped for the best.
Mike
Last edited by AmarilloMike; 12/26/09 07:28 PM.