Originally Posted by RobF
Some scopes don't jump in steps. Some like the s&b just move with the temperature in an analogue type fashion.
It's something to do with the pa assembly, but no one seems to know what, even high end scope manufacturers. What is known is that the characteristics are common to each scope of the same design, and that different scopes have different shift profiles.
From the answers it sound like it is always that the actual optics that shift so you read a range but that read range is wrong which means you allocate the wrong number of clicks....or....can it be that your read the range correctly but the mechanism that moves the POA has shifted somehow so when you apply the clicks it looks in the wrong spot