hey man my dad shot one earlier this year that we looked for several hours for and couldn't find (couldn't even find any blood). i had taken the day off of work the next day anyway and at first light i went and just kept looking at the ground and was getting discouraged until i came to a spot where the leaves had been kicked up and i just kept my eyes open and about an hour later found him and a lot of blood where he'd laid and died. poor shots happen, just keep your eyes open and look hard (possibly in your case, really hard), and you should find him.