Originally Posted by Lol Moore
Thanks for that will have to give it a try
Its not actually what i was getting at, I was wondering what actually moves in the scope to cause shift and why is it a step change, if it was simply expansion surely it would be gradual unless something "clicked" out of place as the expansion reached a certain point
The comment of Rich, we are lucky its not much worse, rings true for me, the engineering must be exceptional not to get more shift than we do
From your description of the "square test" and the results that only one scope has failed is it not too easy, should it not be at longer range to magnify any errors - if everything passes not a real test
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.