I had a conversation with a new shooter, and the question of what would be the most desirable point of impact for doubles should be? I couldn't give a him a very good answer. Maybe some opinions from some of t/s better doubles shooters? I would think for the ease of explanation the idea of percentage's would be simpler to relate to. He has not shot any doubles yet, but I don't think it will be long due to the fact that he owns a o/u.