Chris, about 12 years ago I built a 72" 50# elb style bow. About 1" wide. It was a great shooter but had a horrible painful sharp handshock, so bad that I would drop the bow after the shot and grab my hand in pain. I had to shoot like 800 grain arrows to tame it down. It wasn't high in mass either at around 16.5 oz. Several years later I decided to make another one but tiller it slightly different, a little more elyptical and it smoothed right out.