When smokeless powder were introduced in the late 19th century, we experienced a new era in the manufacturing of firearms. Paul Mauser’s bolt action design has been copied ever since and are still used in modern rifles. Gun experts you’ll meet in this episode: Philip Shreier, Dr. Jack Atwater, Larry Potterfield, Gary Paul Johnston, Lance Olson, Stephen Hunter, Jason Schubert, Ross Seyfried and Ted Nugent.