A few pointers. Do not tense up your muscles this this can cause the problem you are referring to. Put the stock snug against your shoulder but only with gentle pressure keep your shoulders relaxed [this is important and where a lot of people mess up]. Point left foot at the target the right should be a little more than shoulder width from it and at 45 degrees. The left hand should be strait in front of the shoulder and when you turn to adjust wind-age or follow a moving target move at the waist and not above it. This is for a right handed person so if you are a Lefty reverse things. Hope this helps.