One other thing to add to the equation is eye condition.
Example: no offence to names used.
John Costello has perfect 20/20 vision, he sets his scope up on an average temperature day, say 20 degrees and all ranges parallaxed are consistent and repeatable.
A much older shooter (no names mentioned) does the same thing as above with the same set up.
When the temperature drops/rises and gives parallax error, do both shooters get the same results.
The reason I'm adding this, is that I have set up scopes for a few people in the past and what was right for me was not right for them, distances came in at different points on the side wheel, and clicks dialled for these distances also changed. So shooters may get different results with the same scope.
The Pope HW97 V-Mach. Gary Cane Laminate stock. Leupold Competition 40 mag Mildot.
The Smiler. Walther LGU. WE Laminate stock. Leupold Competition.
The Dark Destroyer. TX200 MK3. Leupold Competition 40 mag.
Pro-Sport. Warren Edwards Blue Laminate stock. Bushy 8-32x40.