Multi blades through the guts provide a bigger hole for more blood period. Also there is a chance for an intestinal trail also as I have been on more than several of those.Big wide or multi blades through the guts release more toxins, causing the animal to lay down quicker. And stay down without having them get up with the coagulated blood clot at the entrance and exit wound. And then going off and leaving no trail. If I can kill a 2100 pound American Boston with a 70 pound bow and a 3 blade it seems to reason thet that you should be able to kill a hundred and fifty pound deer with a multi blade or a wide two blade. If not maybe you should check your equipment and your tune.
Mike;Was that a single bevel that took the Gemsbok?