So after some good advice in my other thread on shooting accuracy, I general shot better this w/e when standing and not resting the gun on the bench. But I have a real stupid question that I can't seem to work out. As I mentioned in the other thread, I have the Eotech 552. I'm not understanding how you can keep the optical sight zeroed between trips to the range. I take it off to clean the rifle after a day at the range, and then when I go back to the range and put it on, of course I have to zero it again. So I have this install-zero-shoot-remove-clean-install-zero vicious circle going. >>How do you guys keep your optics zeroed and ready to go after cleaning your rifle and before the next trip to the range? Are you leaving the optic on the rifle when you clean the rifle?