I had the same shot on a Doe with a muzzle loader.. it was a heart shot that broke her right leg, through the heart and lodged under the skin on the far side.. on entry the bullet entered at the elbow broke her leg but went in where the skin was loose and no blood lost , then passed through the heart. all the blood stayed under the skin.. I tracked her for about 150 yds and found her dead.. mark each spot you found his track to establish a straight line for about 50 yds and follow that line and you will probably fall over him.. they run as straight as possible when heart shot .. I learned my tracking skills from an uncle that was part Indian trust me on this..
