I've done the first and last light "doe or button" question many times with many scopes and a few binoculars. It's an important question since there are fines on our lease for shooting buttons.
Sometimes when I wasn't going to shoot I took time and fiddled with the scope magnification up and down checking things out. With a wide variety of scopes, as long as there is sufficient exit pupil, magnification helps resolve things.
It's become kind of moot for me since I've been using high quality binoculars.
