Adjusting the stock is about removing shooter input from using muscle tension . Build a good prone position on the rifle with your eyes closed and the open them , you should have a full sight picture . From there adjust the rifle to get the desired sight picture with little or no shooter input to the gun . You should be able to stay on the gun for extended periods with out strain , if not adjust your position and stock till you can . Come out to one of the matches and talk to some people is still the best option that I always give .