Fourweight- I used one last year! I shot a doe at 18 yards, with my 50# longbow using a 520 grain arrow. It penetrated well, and did leave a good blood trail. I was not as impressed with the results as I have with my cut on impact broadheads (used magnus, zwickey, howard hill and grizzly's). It did do the job, but the head was unusable again. As all of us know, a razor sharp head places in the right spot will do the job. the issue we as traditionalist face is the differance of kinetic energy between are wheel brothers. The compound will if match with proper arrow weight deliver almost twice the kinetic energy of our bow's, thus they can utilize tackle that is not as properly matched as ours. Not slamming anyone or trying to cause arguments just the fact's, based on Dr. Ashby's findings and my own. I on the other hand have no problem using them on turkey's and cann't wait to get a shot at one this fall with the Rage!