Arrows aren't bullets, and shoulder bone shots should never be advocated. Most important is to learn to shoot with great accuracy....and take the right shots. That will go MUCH farther than two steps closer, some other head, or trying to turn your arrow into a 'magic bullet'. You can't 'buy' a shoulder blade pass through...But passing through the ribs is free all day long.Learn to accurately shoot your bow, and most all these other issues are mute. Accuracy Trumps Everything.