I have a Skorpyd I bought years ago when he was still making them in his garage. No idea of speed, but plenty fast. I've taken probably 7-8 Deer with it so far. There was a good buck in a group of deer feeding about 34 yards from my blind. He was in the back of the herd, and only raised his head to look around before continuing feeding. After 3 or 4 times, I got ready, and put an arrow through his neck at 45 yards the next time he raised his head. This thing will shoot 4" groups at 50 yards off the back of my quad.