The really stupid thing is that when we all used 4x40-etc power scopes and after the 3-9-40 craze came about I done the same and got 3-9-40-50s but still usually left it on 4 power I think the extra power was used as a telescope just to look further --same as the parallax scopes got put on zeroed at around 25 yards then left at that stupid really but just to keep in with the trend of the day---now it a case of if it works don't try to fix it