A good day to kill
(Book)

Series numeration from Fantastic Fiction.

"For Chet Byrnes, building a ranching empire means adding new land, hiring good men, finding water and trying new breeds of cattle. But outlaws and Tuscon's idle rich want to take it all away--and Arizona just may be too lawless to stop it. So while the Byrnes family expands its reach, Chet must do his job hunting down outlaws on either side of the border. Chet's cowboys prove to be tireless fighters, going up against former Mexican military men, a powerful family with bad in their blood. Then Chet takes on the most dangerous risk of all: a bloody, all-out shooting war--with everything to lose, and one last enemy to kill"--Page [4] of cover.