Originally posted by JimB: It has to do with back tension.it's hard to explain but go to the Shooter's Forum and look at Terry's "Form Clock".When you learn proper back tension,you are pulling more with your back muscles and less with your arm.Your drawing arm elbow should be in line with the arrow nock and point.If it isn't,you aren't using back tension but are "arm pulling"You can have the same anchor but with proper back tension,your draw can be 2" longer.With proper back tension,your bow arm is more likely to stay on target at release and the release itself is more likely to go straight back as it should.Do yourself a favor and get Masters of the Bare Bow and watch Rod Jenkins explain back tension and other elements of the shot.Most people that take his class report increasing their draw lengths 1" to 2"-same anchor point.It has nothing to do with where you anchor but how you stretch and open up as you allow the upper back muscles to take over.