A high musle hit, the deer is not dead. You said it was in the eveing so the buck was real close to his core area, his comfort zone, and if he had no idea you were there he will be back. Stay clear of the area for a week then try again. I think you will see that deer again. As a certifed tracker for Deer Search we would not even atempted to find your deer with a musle hit. Stay calm and give him another try later next week, good luck.