and swaged them with a powder-driven carbide rifling button he made.
They got a machine clamp on and twist the round barrel at an undisclosed rate.
QuoteThey got a machine clamp on and twist the round barrel at an undisclosed rate.I'd love to see that video.... The process I have seen photos of shows an external swaging die that puts six crimped grooves in a helix in the front portion of the barrel by squeezing it, creating a rifled choke by squeezing it from the outside.... The barrel wasn't twisted, just compressed....Bob
Quoteand swaged them with a powder-driven carbide rifling button he made.Are you saying he propelled the button thru the tube with a powder charge? Tom