Thanks again for the advice. I have got the Brockway book on order, and I will check out Navy Arms barrels.
If you guys run across a good buy on a set of barrels at a gun show and you don't want them for yourself, I will buy them from you. Or if anyone has a set of barrels that they might be willing to part with, let me know as well.
I am not in a real hurry to build the gun, but in my experience the good parts get more scarce as time goes on.
Knapper