Fred I read your posts. It was interesting and I used a similar method with good results. It is not expected to be a permenent fix. I remember watching a repair on guns and ammo or another similar show and they removed the hinge pin put the barrel together on the frame , held it in place with a padded vise, and used a repair kit that came with a tapered file and matching tapered pin. They used the round file to make a new radius with the frame and barrel lug at the same time. The pin was then inserted with a good amount of pressure, and then cut and filed flat with the frame. Looked like a nice kit, but I've never found one. It was an old shotgun repair so I do not know if the same pin would be used for SB2.
Jerry