I'm on Comp 45 but IMO consistency of method is king.
I make sure my eye is focused as much as possible on the reticle (Pain with a target dot) and then rotate the wheel counter clockwise (near to far) and as soon as the image becomes clear I know my range. I don't turn too fast but try to keep a consistent movement of the wheel.
I have found that if I rock the wheel my eye loses focus on the ret and starts focusing on the target and then my eye adjusts so there is no real difference between 48 or 53 so not much use!
I moved up from a small wheel (78mm to a 112mm) and have found it easier to range with.
FYI my competition scores do not reflect my range finding ability rather my inability to sit/kneel/stand still