Well, I was thinking of a .270 Weatherby Mag 130 Grain bullets.
I was thinking that instead of using the scale that the scope is calibrated for, I could create my own scale at the range by sighting it in and testing the impact points relative to the dots at different ranges.
I guess I could try the math to figure out what it should be on paper and then verify at the range.
You could do that. I have a Burris 3-9x40 with their Ballistic Plex reticle. Turns out if I sight my 6.8 in dead on at 100, the second stadia down is dead on at 250.