How about Steve Mcqueen in Nevada Smith? He tracks down 3 men who murdered his parents and on his journey, Brian Keith teaches him to handle a gun, a S&W Schofield. Later he robs a bank so he can get thrown into a prison camp where one of the murders is doing time. He befriends him and talks him into escaping with him into the swamp were he kills him with ,what looks like a M&P, he stole from a guard