Steve Alcairo, general manager at High Bridge Arms checks the sights of his personal rifle during downtime. Photo by Ryan McNulty By Colin Blake [dropcap size="50px"]I[/dropcap]n 1971, Harry Callahan,...

Photos by David Henry   A gun is fired once the trigger is pulled, causing the hammer to hit the firing pin, which strikes the primer that ignites the smokeless powder, thus twisting the bullet...