Originally Posted by Vikingdad
I bet the ideal shooter's body dimensions would look something like a neanderthal. Long arms and a short torso. That does not describe me though so I improvise by doing the leaning back thing, making a firm skeletal triangular frame. I was taught how to do it by a competitive shooter, which might be what it takes to learn. It is very unnatural but at the same time effective.
I learned the same position on the rifle team in high school. The neanderthal body doesn't help much (that is my body type), at least with standing. My upper body and chest has always been much larger than my lower body and hips. As a result, my elbow cannot physically reach my hip (my upper body is just too wide). On the plus side tough, I still had great skeletal support despite my elbow not resting on my hip. The left side of my chest still completely supports my left arm.
Vinvine, here is a link that covers the basics. Notice the hand in the photo is almost directly under the action (were the clips is). If that paerson leaned back a little more and didn't have a 1" recoil pad his hand might clear the clip? Wide hips also help. Our best shooter in the standing position was a girl, and she had really nice "hips". http://weihrauchowners.freeforums.org/download/file.php?id=7