I may be wrong, hell it wont be the first time, but i think he nailed him. What I see is at impact the deer flinches and as he runs off the shoulder is lagging behind the deer.

This makes me think that the bullet has smashed the bone and more than likely that deer is deader than doornail. Hope your little buddy finds him, I'd look long and hard.

And as for no blood, I agree with the previous poster. Many factors play into this and I wouldn't let it phase me. Use the resources on this sight and get a tracking dog involved if you can. Some of those dogs can actually follow the scent left behind by the gland in between the deers hooves, so no blood is necessary. Beautiful buck and good luck!

"The kill is the satisfying, indeed essential, conclusion to a successful hunt. But, I take no pleasure in the act itself. One does not hunt in order to kill, but kills in order to have hunted. - Finn Aagard