With some difficulty I obtained good images of the bulges from the interior of Jason's SAC barrel, and discovered more very small bulges and what looks to be tool marks when the forcing cones were roto-rooted frown





Interesting what can be found when one chooses to look

Still accepting barrel segments smile and would very much like to have a piece of Meriden Fire Arms / Crescent 'Armory Steel' for composition and tensile strength testing