This is from my post of July 4th, 2009.
I question, "doomed from the start".
This method of construction was used in the time of Henry VIII and said to have the ability to withstand greater pressures than the cast cannon in his ship board cannon.
There are extant examples of monster cannon employing this construction in europe and elsewhere, e.g. Mons Meg(?) and some Turkish brutes.
Montreal blacksmiths constructed them during the Seven Years' War.
The "failure" (in my 'umble opinion) is due to labour and not materiel. It is low-tech hand-built construction and not higher-tech mass production.
The best laid plans of mice and men, oft times gang a glee.
rc