I had thought Al Lind had a pantograph. Phone number was 253-584-6361. One thing I keep seeing pop up is everyone is concerned about the barrels and for good reason. Find someone with a barrel wall thickness gauge and have the walls of those barrels measured. You may be stopped dead in your tracks right there unless you decide to sleeve it and lose that wonderful damascus or you could consider briley tubes. But you will not know unless you have the walls measured.