One thing to remember don't blame the bullets....what possibly happened was you shot the deer the hide then covered the hole not allowing blood to exit threw the hole not leaving any or much blood to follow.....
I've seen it happen shot a 8 point behind the shoulder with a arrow opening day right at last light of deer season ran into very heavy cover found the bloody arrow in the ground no blood to be found....figured wait until morning then track....sat in the same stand and hunted the next morning half hour after sun rise a 8 point came by and I shot it ran the same way as the deer yesterday evening.....waited a half hour and tracked it had a great blood trail found both bucks 10 yards apart....
When I looked at the buck that didn't leave a blood trail it could be seen that the skin covered the entrance-exit hole because the deer was moving at the shot....
