Dragonfire Trail — Hank J. Kirby

You could call them 'blood brothers': they had shed plenty of their own blood during the savage battles of the War. And it had mingled more than once. Afterwards, they rode together, getting into and out of scrapes, watching each other's back, sidekicks and friends. Then that old enemy and infamous disrupter struck gold. Lots of it already tainted with blood. The only way it could be settled was over blazing guns.