Here is a different point. Two deer back my wife shot a deer that was angling away from her. The deer jumped ahead, the arrow hit the back right ham, skidded off the hip bone and angled forward through the deer and stopped in the front left shoulder and buried half way up the head into the scapula right next to the front edge. The bow was a Darton recurve 38 pounds at 26.5" draw with a tapered cedar shaft left wing with a right wing grizzly 125 broadhead, that was first filed, then hit with a diamond hone and then lightly serrated with a grizzly file corner. A one hundred yard blood trail. While following that blood trail I found a doe that was hit with a large three blade razor sharp carbon arrow right through the lungs that was lost by other hunters two weeks before. They claimed they had no blood trail. I found the arrow arrow near the doe, the broadhead was still shaving sharp and the doe had pieces of the carbon arrow still stuck in its mouth. From this I can easily decide three things. 1. I will never use a carbon shaft, period. 2. Mixing left to right wing does not make as much difference on deer as people may think. 3. The actual edge does not matter that much as long as it is keen and sharp when it hits the vitals. What I can assume from this is that large shaving sharp three blade lung hits do not guarantee easy to follow blood trails, that a straight flying arrow with a serrated broadhead will get good penetration and bleeding from a 420 grain arrow shot from a light bow, and that the results are similar to last 30 odd deer we have have taken, some with my single bevel Hills and some with Grizzly broadheads some were matching wings others were not, and some with zwickees, with nearly identical results on deer.