For the record and in benefit of newer users who might make use of the info ... the reason OLC went for fixed zoom was that when going above 1x the horizon waves flatten and look worse. OLC decided to keep the zoom fixed at 1x and use the FOV aperture to produce the same result of visual augmentation in the objects. He set the attack scope for a 3x zoom size IIRC, can't remember what the observation one had
