David, the new turkey head from VPA will be available in various weights before spring arrives. The business end of the "Spur" is basically a Terminator, but there are a few surprises ("Spurs") riding behind the leading edges which are designed to impede complete penetration of the bird. It won't be barbed (impedes withdrawal), rather it's designed to slow forward motionn to increase shock, keep the arrow IN the bird, etc. They are streamlined and should fly very well. I was going to be in the VPA booth at the ATA show this week but had a trip scheduled, so I haven't actually had the new heads in my hands yet:^(