I just don't get it. I have watched the release and now mainstream use of expanding broadheads, and I am still dumbfound as to why they are so popular. Consistently, these hunting shows are not getting pass-through hits with these things. There are full grown men hunting professionally, 60+ pound draws on compound bows. Dude, my wife with a PSE Nova at 30 lb draw would regularly put a NAP Thunderhead or Muzzy clean through a mature full sized deer, blood everywhere. If it takes that much energy to open the blades, some have estimated 30-35% of the overall KE, how can this be a good thing? The only advantage I see is the arrow doesn't have to be spin tuned for the broadhead. Ya, with a carbon this can be an issue since you are using epoxy, but I still easily get 10 out of 12 arrows to spin tune. I just don't get it. It's not even good sponsorship showing this product not being able to punch through a whitetail.