making some progress on the barrel. Started with a 2-1/2" chrome shaft, 27" long. Have the outside rough turned to about 2", and been drilling a hole thru it. So far, got a 55/64" hole all the way thru so far. I dont have a coolant thru drill system, so its slow going, but Im getting there. If this gun turns out good, I might have to make a 2 bore.