I seem to recall years ago people telling me too that if you use a Leupold and dial in, wind it on past the point you need then come down again to where you want it at.
Something to do with the gimbles freezing or something ?
Then i heard they don't freeze or stick as they are made from brass and brass doesn't stick in the cold !!
I no longer dial in anyway but i know what you mean about the temp shift in extreme heat and or cold.