Just got back from the field shooting with this scope. Glass is outrageous in clarity. Had to dig out some math books to learn this mil mil metric system. What is it I'm missing ? I was sighting the rifle in, 1st group was Aprox 4" high. So math book says 25 mills is equalevent to 1" ( 10 mills is a Centimeter). So I adjust down 25 mils and now its Aprox 4" low ( And the scope started smoking) ? So I put away the math book,and just adjusted the scope regardless its a metric scope. I dial in elevation( 100yds) It turns out I only lowered it 5 clicks and it brought it down 4".So does this mean 1 click move's 1" at 100 yds ? Any how with just a few shots I was able to zero it. Its really different but cool shooting this FFP scope today. So what is the advantage of a mil mil scope over a MOA ? I mainly bought cause everyone raved about the glass and its looks really cool on my rifle. Plus I have a shooting club here where some of the guys use these mil mil scopes in matches I've shot in.