I could be getting myself into hot water here but I had another look at the Armstrong RML that Tracy saw in St Ives Canada. I believe that particular piece is a 10 inch 18 Ton RML Mark II introduced in 1867 and not an 8 inch gun.
shooter2
Shooter2, There is no need to feel that way. We are here to learn too, which is why I really appreciate the information, besides you develop quite a thick hide as a machine shop inspector for 35 years. The very, very best have tried to hurt my feelings. Their efforts were for naught.
The site from which I extracted that info and photo was a Canadian one. To be fair to them I must tell you that 80% of the site dealt with the WWI disaster that befell Halifax, Nova Scotia when the Norwegian ship, SS Imo collided with the French cargo ship, SS Mont- Blanc, fully loaded with Military explosives, including Benzene and Picric Acid, resulting in the largest explosion to that date, 2.9 kilotons. Halifax was largely destroyed with extensive loss of life. The characterizations of the guns was an ancillary issue. That was four years ago that we obtained that picture. The site was one of those temporary, Free, build-your-own, websites that no longer exists.
The reason that we never required bore size identification in any of the 'What is it? Where is it?' contests that we created for GBOcannons members, was that you must have an object with known dimensions near the cannon in question on the same plane as the muzzle in order to properly calculate bore size from a photo.
Thanks also to Starr 2011 for his information. If either of you gentlemen could suggest a good book on the Woolwich Guns, please let us know.
Tracy and Mike