Does anyone know the title to this movie I saw sometime in the 70’s on TV (the movie is probably from the 60's). It is a western that ends with a shootout between a posse and the couple they are pursuing. The couple is huddled low while the man is shooting. After the man is killed, the posse calls to the woman to surrender. Instead, she grabs the rifle and continues the fight. She is quickly killed and slumps over dramatically.
My recollection is that she was a screen bombshell, such as Rachel Welch or Ursula Andress. I have already checked The Professionals, Bandolero and Red Sun, with no luck.