You are probably right about the click values,but because of the way the Shepherd is made I almost never change the settings. I don't know about the durability issue,mine works ok for my 300 Win mag. This is a hunting gun so it is not shot as often as a competition gun would be.
I'm hunting tomorrow. I have a Nightforce,a Leupold and a Shepherd,I'll be taking the Shepherd.When I go to competition or if I'm shooting long,I go to another gun with another scope.