Renegade Guns by Sam Gort

Sam Kelly, meat contractor, watched the renegade Indians at their grim work and went in search of Ralph and Ernie, his friends and employees, intending to get the hell out. But he discovered that the renegades had found them first. Then, a knife in the back told Kelly that the redmen wanted his life too. However, he survived by a whisker - and he trod a path of death until he found a final shoot-out where he least expected it.