comfy, you need to go back today and look for your deer. Looking for an hour after the blood trail ended is not enough. I would first circle the area that you last seen sign starting at 5 yards and keep going out. If nothing, grid search, if nothing, check all area watering places such as ponds creeks, etc. You need to spend longer looking for it.

Now, I don't believe the hit was as good as you think. If it was, it should have been dead within 1/2 hour. My rules of thumb is this. If I am hunting during the evening, I am sure that I can hunt the next morning. Second, I limit my shots to 20 yards if there is rain or if the area is expecting rain. Third, if I make a hit near the end of the day, if I don't see or hear the game go down, I leave it till morning. Part of your problem is that you went after it too fast IMO.