Prime Cut is another contemporary underworld bloodletting, which is drawn, quartered and ground according to an overused recipe for hash. Lee Marvin and Gene Hackman provide the dressing along with the scenery of Calgary.Writer Robert Dillon sends collection-agent Marvin to Eddie Egan, a Chi gangster who no longer is getting his cut from Hackman, a Kansas cattle king who also deals in dope and girls, among whom are Sissy Spacek and Janit Baldwin. Director Michael Ritchie moves the pawns about inventively and with sterile precision. There are no serious dramatic demands made of the players. Marvin and Hackman do this sort of thing all the time. Spacek and Baldwin look good in their feature debut and Gregory Walcott is most effective as a supersadist.