First of im sorry to hear about your luck because when you hit them in the spot that you described i call it neverland its just meat and thats all.. however, i do think that you caught a lung or he wouldnt be blowin clots.. I made the same shot on a nice 8 point last year and never found him..... followed his blood and clots for about 1,000 yards and after about 2 days of trailing i dunno what happened i just gave up