davepjr71

More blades give you a better chance of hitting something vital. The problem with too many blades is eventually you create so much cutting surface that friction can start to become an issue. Think of it as trying to push a 1" diameter pointed stick into something. Instead of cutting through an animal you are almost punching. I'm not talking about 4 blade heads here. Just some of the heads that went a little overboard that used to be made or may still be hanging around.

By the way, the Undertaker (Piston Point) broadheadfollows the spin design that you were talking about. Upon impact the head keeps cutting straight but the arrow itself will still spin freely. The theory behind that is thatby allowing the arrow to still spin you retain the rotational energy that could be lost when on impact the arrow would be jerked to a hault. Not sure if it really makes all that much ofa difference though since almost all of the energy is moving forward in the first place and therotational force of the arrow is very small and only forcontrolling the arrow inflight.