Position in the shooting sports is sometimes referred to as “platform” or “hold control.”
As with any sport, success comes when your “position” is most conducive to achieving your goal.
Just as in baseball, soccer, football, or tennis, unless you have a balanced, relaxed, and stable stance, you cannot achieve your best results. Think of the baseball or softball batter. The hitter will not achieve maximum efficiency at bat if his or her stance is not balanced, stable, and comfortable. The same is true with shooting. If the standing position is required for pistol, rifle or shotgun shooting, then you must look first to creating a stable “shooting platform,” starting with your feet.
Once your feet are positioned approximately shoulder-length apart, check to make sure that your torso can be supported in a relaxed manner. Actually, the most stable position is prone. But, the “game” you choose will dictate the positions you will be required to assume once the signal is given.