Re: contolling movement with optics set at higher power.
I dont know what your bench set up is, but I have a concrete bench that allows me to use my lead sled. Very very very sturdy rest. Just sit the gun in the rest, put some sandbags on it, and put the crosshairs where you want your bullet to go. If your shooting off a makeshift rest, your breathing is a key factor. Try to break the shot at your natural resting beat, just after you let your breath out. Hope this helps.