I've only seen a photo of the setup used originally. The barrel was vertical, clamped on the Knoxform. The receiver, held in the receiver wrench, was screwed onto it.
No way for anything to slip.
It is my understanding that the No. 4 barrel was intended to screw in hand tight to 14 degrees off TDC, then it would be set in place with 120 ft. lb. of torque. That's more than most any rebarrelling done by a gunsmith.
One scrapper that I broke down let go with me hanging on a 3 foot cheaper. That's over 600 ft. lb. of torque.
Archimedes Quote: Give me a lever long enough and a fulcrum on which to place it, and I shall move the world.




















































