Sure... a heart that is not pumping is not... well... pumping. It makes sense and maybe some fat plugged the hole. That seems pretty common... less blood from a heart shot than a double lung. Both deer however are very dead in a very short distance. An exit wound from a heart normally leaves plenty to follow though in my experiences. This was not a perfect heart shot but believe me it did massive internal trauma. I never found a single drop.(Check this pic.)
Different circumstances differentiate the blood trail. Different size hole, different angle, more fat, height of the hole, speed the animal ran off, etc. I shot my buck last week with a 1.5" Ulmers Edge. I found a good amount of blood to start, then became concerned because it diminished almost immediately and the buck was headed towards a nasty thicket where you have to step on them to find them. I kept following pin drops of blood and hoof prints in the mud for about 50 yards, then it opened up a bit but I still was concerned. Then I saw bubbles in the blood so I was feeling good, then I looked up and there he was about 10yds in front of me just on the edge of the thicket. I cut the top of one lung in 2 and dang near center punched the other. The wounds were high, so all te blood was caught on his side in his fur. When I opened him up it was just a pool of red. The broad head performed excellent, I just hit him high. I heart shot a doe with a slick trick a couple years ago and couldnt find a drop of blood until I found her. I deflected off a twig a couple years ago and caught a buck in his back leg with an NAP Nitron and he bled like a stuck hog. Ended up being just a superficial wound. It's not really the broad head as much as it is a combination of all other variables.
Agreed... not the head... unless it's dull. I spined a doe last year... she dropped in her tracks but it was like a murder scene. I almost got sick from the sight of it. I heart shot two does earlier that left fairly light trails but enough to easily follow. Muscle hits and/or neck hits leave huge amounts with no cavity to fill up. Every shot is different and rarely do we make the "exact" shot we planned or thought we made. When I had a trail dog... nearly every single hunter swore he made a great hit. That was almost never the case. Rebel found only one deer... that was well hit but just didn't bleed out of maybe 15 or so found.
