Bullet For a Bad Man — David Robbins

BLOOD FEUD
The son of a prosperous Arizona rancher, Boone Scott is content to raise cattle for the rest of his days. His brother, Eppley, is another story. Dangerously dissatisfied, he secretly plots to take over the family ranch. When Epp pays an assassin to kill his brother, Boone's lightning-quick hands leave a fistful of dead men behind. Unaware of his brother's treachery, Boone flees and soon faces danger from hired gunmen, horse rustlers, and wild Apaches. If he can survive all those threats, he just might come up against the deadliest peril of all: a showdown with his own flesh and blood.