biggest buck ive shot but can't find

A gut shot deer with Archery equipment can live 24 hours or more unless an artery is hit. I don't recommend looking for one for over 20 hours. He will just keep getting up and going. They generally will lay until jumped. Once jumped they may go for miles. The blood vessels inside an animals guts are small leaving very little blood trail. Most of the bleeding is done internally. Generally speaking they will head toward water. My family and I have been big into archery for many generations. With several European titles along with my son winning 6 state titles in the last two years. Trust me I have seen it all.
Good luck with your find.

P.S. Where are you located