This Western is above average, feeling like Burt Kennedy revisiting familiar territory. Six Black Horses was directed by Harry Keller and written by Burt Kennedy. Audie Murphy, Dan Duryea, and Joan O’Brien star, with cinematography by Maury Gertsman and a score by Joseph Gershenson. The film uses Eastmancolor and was shot on location in St. George, Utah. It centers around Murphy and Duryea being hired by O'Brien t…