Whiplash! (A Peacemaker Western #3‪)‬

McLain came to Texas to find peace - and stayed to enforce it with his Colt’s Dragoon pistols and his Sharp’s carbine.
Zac Moffat came with a stockwhip and a gang of renegades, to take what he could by terror when it worked - by cold-blooded murder if his victims fought back...
McLain saw his dreams dissolving in a bloody range war. The only way to stop it was more killing - and the only killer was man enough to do it was McLain.