I was going to say, I help track deer shot with center fires like a 30-06as well, and some of them left little or no blood trail. If you hit high and they do not drop you have a tendency to have little blood I find. That's because something has to fill up before spilling out. Especially if there is no exit hole.

If you can hit an artery and cut that with an exit hole, then the heart will pump blood out the hole, sometimes spraying in an impressive pattern. I knew a guy that tried for a neck shot once, and missed the spine but hit and blew the juglar vein (danger of the neck shot). Anyone could have tracked that deer.

How many after shooting, stay very still, QUIET, watch the deer run off, and then listen for it to flop and drop? I've almost walked to deer that got out of sight (bow hunting) using that simple method of getting my track started.