The Wasp Jak-Hammer is a good solid head. I become bored trying to break one while shooting it umpteen times into a 3/4" sheet of plywood-it never did break, its blades deployed/opened every time, and penetrated as well as fixed blades under a similar test. This head had reasonably good accuracy out to35 yards-well beyond the effective range of most bow hunters (effective range equalsthat distance from which an archer can hit a target 100% of the time. The vital area of most big game, the "target", is approximately the size of a nine inch paper plate).

I will say this:

Mechanicals are devastating on animals when shot from the right bow! They should not be overlooked. Nor should we make wives tales about their use.

Hope this helps!

p.s. Longbeard, it's hard to take you seriously. I'll bet you any Colorado hunt (on me), you would like to go on, that you cannot hit 10 arrows in a four inch group from 50 yards with your muzzy broadheads. I'll even let you move to forty...

If you lose, I'm going to ask that you put down your bow and take up fishing. The lies are a little easier to swallow in that sport.