trailer 25 yards is to close. you should try aleast a 100 yards or more. at 25 yards the error will not show up very good. at a 100 or more the error will be easy to spot. if the error is as bad as i think you will most likely never be able to even spot the object in your scope. one other think that i just remembered doing one time. was to remove the scope mounts and tighten them down from the other side of the action. i believe it was a .22 one time that i used all the adjustment up on the scope and could not bring the shot into the middle. just by tighten down on the other side cured the sighting problem.