PABowhnter said it. A lot has to do with the kind of bow you shoot. I'm sure if he got himself a ProTec with LXPro limbs, he'd shrink his 50 yard groups in half, immediately. Long, deflexed riser bows are simply more stable than short, reflexed riser bows. Less letoff helps too. Sure, you get slower arrow speeds with the higher brace heights, but they are far easier to shoot accurately at longer ranges. And when you have known distances...