I think you will find this deer, I don't know if you have read it or not, I made a very similar shot myself last night. I gave him 2 hrs and found him 150 yds from where I shot. I believe this is what separates veterans from beginners, the tracking stage of hunting. I have made mistakes and learned from them over the years, thanks to guys like yourself. I took some heat last night on here from a few people, but overall most were supportive. After looking at the insides of my deer, I did hit his liver and maybe some lung?, but the liver shot is what really took this creature. When I found him he had been dead for a while. Good luck!!