When is a bow properly tuned? That is the question I am trying to solve. Do you base your percentage tuned on paper tears, bare shaft, broadhead placement, or just a gut feeling?

My new switchback is shooting bullet holes during papertuning, but to do so, I have toposition the centershot 1/4 inch out of true centershot of the bow. Is that acceptable? Is it tunned? I can also put all the arrows in a 2 1/2 inch circle at 30 yards. Paper says it is tuned, but my gut says otherwise.