Bullock came to Deadwood, South Dakota, on August 1, 1876, whereupon he opened a hardware store. Soon after his arrival, Bullock was asked to become the town's first sheriff. He accepted the job and continued to operate the hardware store on the side. Bullock was as brave a man as one could ask for, and a crack shot besides, but even so he used his gun rarely. He preferred strong words to hot lead. Later in his life, Bullock owned and operated a ranch which bordered on Teddy Roosevelt's Elkhorn ranch. Bullock is credited w/ introducing alfalfa as a crop to the Black Hills on his very ranch.