Dead Shot Smokeless and American Powder Mills


Does anyone know if circa 1907 Winchester Leader trap shells were loaded with Dead Shot Smokeless powder provided by the American Powder Mills? Also, does anyone know when APM went out of business?


Winchester actually did’nt have a seperate listing for Leader “trap Loads” until 1930. Shot size was 7 1/2c in 1 1/8 or 1 1/4 oz. However, the earlier line of “Leader” and “Repeater” factory loads utilized Deadshot powder quite often and was still being used in factory loads up to about 1925.