I remember seeing Mr Salvo at the SC State Muzzle Loading Matches back in the '80's. I believe he was a member of my club, The Charlestown Long Rifles of Charleston, SC.
I believe he forged all the hardware on his iron mounted rifles, and sold many a throwing tomahawk that he made. The handles had a spiral black stripe.
He and the late Frank Burton from Pawleys Island, SC were among the most well-known gunmakers in the low country of SC.