Forget the Grim Reapers. A few years ago, I bought a three pack to give them a try. I shot a buck and the arrow did weird things after impact and actually travelled up spining the deer from the bottom side. Yup, he went down on the spot but crawled up to where I couldn't whack him again and had to listen to him. Well, he called another bigger buck so, I decided that I may as well deal with two as easy as one so I could get back to duck hunting. I sent an arrow and whacked him good. He turned and went away and was having a tough time. That arrow didn't blow through either and I had very little blood along the route that I knew he had taken. I went in for dinner and to get the tracking light and some help. Still no blood. We circled around to where I new he would have to cross a trail and found him piled up in the trail. Tried to back track and still no blood. That arrow had done weird stuff too and had stayed completely inside his body cavity after what had been almost a broadside shot. Sure, I was two for two but threw the third Grim Reaper away and went back to more conventional razor heads. Some of that wild looking stuff just doesn't produce the expected results. Granted, only two hits is not an adequate sampling but, it was good enough for me.