The barrel is one thing, but that carriage is a piece of art as well.
I am in awe.
Taylor built up a 3" gun back in the 70's, which was pretty good, on wheels and carriage
as well. We used to shoot 1/3rd pound of 1F powder & a 3" iron ball from a gold mill.
They were case, and had a flashing around them. Taylor ground that off and they became
3" round shot.
A "shot" fired had to be over the SOSound (invisible and fast) and would make and almost
instantaneous 12' diameter cloud of pulverized granite dust come off "The Chief" each shot.
The Chief was a granite rock face that was almost vertical up to 300 or more feet high out of
the ground at the end of the rifle range. It was 300yards to the rock face's bottom. We'd shoot
several "rounds" at it then go up, find them, clean them off and shoot them again. What fun for
2 young cops - lol.