These heads along with the GKF dead heads keep spinning after they enter the target. They do not need to stop spinning. The only reason other heads stop spinning is that their blades are straight.
Wouldn' t it take a tremendous amount of energy for the arrow to keep spinning once it entered the target?? How do you know it keeps spinning??
Unless the spinning is being driven by a constant force I would think any spinning would stop immediately when the head first sinks in.
So are you saying that these heads will actually be spinning like a drill bit all the way through a deer' s chest cavity?? Obviously not at the same speed but you know what I mean.
Interesting