I don't think 10 inches back from just behind the shoulder gives you a gut shot -- even on a deer. It will probably result in a liver shot, or still catch lung.
High shoulder is okay, if you don't mind completely missing the animal if you are high. If you are back and a little low it hits a no-mans-land and results in a wound the animal can recover from. I have nothing against the high shoulder, but I still prefer the behind the shoulder and half way down.
