The zero stop on the z5 is resetable for whatever range you sight it in.
Thank you I do understand that. Unless I misunderstand the zero stop does only allow 13 approx MOA in a single turn. It should give the full turn unless the approx 55 MOA total adjustment is used up based on your rifle/mount combo. I don't know if that ever occurs in the real world but in theory you could set up a rifle where it's zeroed 5 MOA from the max adjustment in which case a canted base would be required to allow the one full revolution to be possible.