gain twist

During the first weekend of the fall 2014 shoot, Bill Hoover and his friends did a demonstration of rifling a muzzle loading rifle barrel.  While Bill’s rifling machine can cut multiple grooves, today the machine was set up to cut five grooves and a progressive or gain twist.  In this set up the twist varied from 1/68” to 1/34” in a 42” barrel.  As we talked, Bill and Philip Iles worked on ... Read More »