I've killed over a hundred with THUNDERHEADS aloneThese are some sweeeet broadheads! I am shooting them currently and all thought I have yet to harvest anything with them, I know of a few individuals that have. The exit wounds are just as big as with the Spitfire believe it or not.
The offset blades along with the QuikSpin vanes really get the arrow rotating in a hurry. As for how they fly, great! As with just about any fixed blade, I had to adjust my sight from my field points but not very far. In fact, it was just a matter of moving the entire housing, not a big deal.
They are darts! I am shooting them on Axis 400's and if I remember correctly, the entire arrow, assembled weighs around 410 - 420. There is no planing, they fly straight, flat and silent. I am a fan.