With a spray like that I think you smoked him. Sounds like a really good hit to me. I wouldnt give up. I mean I've double lunged deer and had them leave a pitiful blood trail. I cant believe you didnt find that deer pretty close. Example: I shot a doe last year off the ground at 10 yards. I knew I drilled her but she took off like crazy and made it about 80 yds back into a thicket. No blood what-so-ever. I heard her kicking around so I eased back in there and found her in a ditch. Both lungs were destroyed but there was no blood trail. Except in the ditch. Good luck man