There is one thing that can be assumed from this test - that another cannon, built from the same stock, using the same methods, in the same dimensions, fired with the same powder, rounds, and loading procedures, in the same mount, should have a similar result. This is not important at all if the gun is unique, but armorer77 does manufacture and sell these, so it does give him and his customers some measure of comfort that their cannon is safe, especially at recommended loads, and that in a worst case scenario of the cannon ending up with a dimwit at some point down the road, they have minimal chance of causing harm to others with it.