time for 130gr Barnes TSX? if you want a pass through...
imagine shooting a 5gallon bucket high.... 2 holes... the bucket has to fill up quite a bit before it would spill out vs shooting low, ie 1 gallon vs. 4+ gallons, that could explain it somewhat, but doesn't mean I would start aiming super low...
personally blood is just 1 tool in finding a dead deer IMO.
if you see the deer run off, mark that last seen spot, if you hear a crash past that, mark that spot, I'd immediately go to those 2 spots, or where I shot, if I see blood great, if not, find those 2 spots and hopefully you have a dead deer laying there, game over.
if not then you may need to get very serious and find drops of blood or simply cover some serious ground back n forth.
lack of blood isn't something I even bother myself worrying about. do what you can.