John, thanks for the suggestion but it's not the scope. When I dope my scope I dial well past the mark I want then dial slightly past in the opposite direction then one or to click back past the mark then to the mark. I've learned that works pretty much the same as taping does. The shot patters is pretty much identical every-time the brake is removed. I'm pretty sure a sticky scope would give a varying pattern the way I dial the scope up and down several times. I never use the same marks when dialing past and back and past an back so it would be virtually imposable for the scope to be settling on the same point for the first shot then drifting back to zero. Also I tried not re-zeroing the scope knowing POI will be off POA. I keep aiming for the same spot and the shots climb 1, 2, 3, then group. Good suggestion though.