Originally Posted by RobF
My march moves noticably at about 25-27 degrees, and it may well do at below 2... when it does it's like a switch.
My custom shops don't move.
Different light can cause issues but i think this is more to do with how the eye reacts to the available contrast. Hazy and bright or dark conditions reduce the eye's ability to determine focus.
What mag is your scope, I was informed the 80 does not move until it is above 40C