Way of the Lawless by Max Brand

In Hal Dozier there was a belief that the end justified the means. When Hank Rainer sent word to Tomo that the outlaw was in his cabin, and, if the posse would gather, he, Hank, would come out of his cabin that night and let the posse rush the sleeping man who remained, Hal Dozier was willing and eager to take advantage of the opportunity. A man of action by nature and inclination, Dozier had built a great repute as a hunter of criminals, and he had been known to take single-handed chances against the most desperate; but when it was possible Hal Dozier played a safe game. Though the people of the mountain desert considered him invincible, because he had run down some dozen notorious fighters, Hal himself felt that this simply increased the chances that the thirteenth man, by luck or by cunning, would strike him down.

Therefore he played safe always. On this occasion he made surety doubly sure. He could have taken two or three known men, and they would have been ample to do the work. Instead, he picked out half a dozen. For just as Henry Allister had recognized that indescribable element of danger in the new outlaw, so the manhunter himself had felt it. Hal Dozier determined that he would not tempt Providence. He had his commission as a deputy marshal, and as such he swore in his men and started for the cabin of Hank Rainer.