45 Caliber Books in Order

Cuno Massey lacks the riding and shooting skills of an experienced gunman, but his father and stepmother's murders send him after Rolf Anderson and Sammy Spoon. His determination to avenge them outweighs his readiness for the dangerous pursuit.

The murder of Cuno Massey's pregnant bride destroys his hopes for a peaceful future. Armed with his Colt .45, he begins pursuing the killers, driven by grief and a determination to make those responsible answer for her death.

Cuno Massey is hunted across Colorado after killing the son of wealthy rancher Franklin Evans. Ruthless bounty hunter Ruben Pacheca pursues the reward, while Cuno's attraction to outlaw Marlene raises doubts about whom he can safely trust.

Freighter Cuno Massey finds his partner Wade Scanlon murdered and their wagon destroyed. Tracking Clayton Cannady's gang, he joins a bartender and a father whose daughter was kidnapped, turning his pursuit of vengeance into a rescue mission.

Cuno Massey tries to rescue a rancher's daughter from a feud with vengeful Native warriors. The dangerous journey brings further threats from mountain marshals, forcing him to choose between obeying the law and protecting the woman in his care.

Seeking a peaceful life, Cuno Massey encounters outlaws attacking a prison wagon to free four convicts. He joins the outnumbered marshal defending the prisoners, committing himself to a long journey under repeated threat from the pursuing gang.

Sentenced to death for killing marshals while protecting women, Cuno Massey escapes prison with Camilla's outlaw gang. Riding toward Mexico with lawmen in pursuit, he struggles to decide where his loyalties belong among equally dangerous companions and enemies.

Fugitive Cuno Massey joins Deputy Marshal Spurr Morgan to recover weapons stolen by cavalry deserters for sale in Mexico. An alliance with a Yaqui leader brings them into a conflict involving gunrunners, a general, and a heavily armed convoy.