Re: Truing the whiz wheel? MV or DA?
Well since the larger wheel is already set to a specific MV for your setup, if you need to correct it to match your elevation for that days environmental conditions, you will end up getting a new DA reading. That new DA reading will become the set line for your elevation readings for the rifle.
So if I am understanding the question correctly, you are trueing more on the MV wheel. The real fact is you are using both the MV and the corrected DA to true.