Doug, I think you are being a little harsh. Drew posted what he thought would bring attention to most readers and if you look at the number of Views, it has.
I know for a fact that I am interested in this post, as I mostly shoot Damascus and Stub Twist barrel hammer guns. I shoot them with low pressure, low velocity, under 8,000 psi and around 1200 fps.
I do check the barrels wall thickness when I get one, and I check it from top rib to bottom rib every 5 inches.
The results from readers looking at what happened to the operators arm and then the barrel hopefully will help in determining what had happened and everyone is entitled to their own diagnosis.
Drew has been working with the owner and like he said, new information will come.
I do believe it was not from failure of the barrel due to previous rusting.
The question that you have to ask, is how did the shell expand in the chamber? I do believe it was an obstruction.
