Keep your setup but change/experiment with different powder levels. Once you find an accurate consistent load, set a target at 100 and shoot a group with each aiming point to get an idea how high each is over the center cross hair group. Then find out from others shooting the same load (or by chronographing) what the velocity is and put the data into a ballistics calculator to determine the distance each aiming point is regulated to for that load. Then your good to go. I hope this makes sense and helps.