Are these meant to be mounted on a certain mil number or can they be adjusted on the fly? I have 22.4 mils in my turret but if I wanted to shoot farther can I just adjust the base to extra 5 mils or 10 mils and shoot or do I need to rezero? I don't have one but thinking hard on buying one. RIght now I have a arc mount with 20 moa and 20 moa base. I wouldn't need to adjust very often just 1 to 2 times a year if everything works out to shoot past 2000 yards.