If he was shot and bleeding, doesn’t have to be heavy bleeding, a fracking dog can find him very quickly. Not finding him within an hour means he got away from the immediate area.
a Tracking dog works even better......
If I shoot you at say, 100 yds, or 200 yds, and hit you, don't you think there might be a possibility that I could run you down and catch you within a maximum of 10 minutes?