National High-Power Rifle Championships. Newspaper clipping – Topeka Capital-Journal, photo of Margaret, “Almost Ready to Shoot”, World rifle campion Army Capt. Margaret Murdock of Topeka adjusted the sight of her M-14 service rifle during the National High Power Rifle Championships, which concluded recently. Capt. Murdock, who won a gold medal in the World Championships in 1966 and was Nat’l High Power champion in 1967, took second this year.