Conference ProceedingsVariability in a Mossberg Model 500 Shotgun’s Firing Pin and Breech Face ImpressionsPresenting section:Criminalistics2013Jefferys, Roger, Morgantown WV; Davis, Joshua, Matoaca VA; Law, Eric F., Morgantown WV; Morris, Keith B., Morgantown WV; Tuckwiller, James, Lewisburg WV; Kirk, Justin N., Buckhannon WVView the paperCriminalistics