Thank you for clarrifying that. Its hard to see how you could miss the brain firing at the back of the head at 0 range, when I've done itm the whole head hasd been totally ruined, but I will have to believe that it can happen. I think I will continue using it for occasional larger birds only.
The rest get a heavy blow to the back head with the back of an axe, which I'm sure kills them 99% of the time and then neck dislocation or more often, head removal. I don't care about making a mess with blood splatter or bruising the neck meat, I only want a quick end for them.