Just my two cents, and keeping it light, I hear a lot of people say that they use MOA because it is what they have always known or ever been exposed to, and for those reasons never give Mills an opportunity. I too used to think this way, until I took a little bit of time to educate myself in the benefits of running mils over Moa. With out getting super deep into the math error differences, if you're shooting say 300 yards or less then it's no big issue but if you are a long distance shooter like the majority of us on here the math ears that are quite apparent in MOA shows up, this is where mils shows its usefulness. If you have ever seen the math or a Ballistics app, The .1 on a mill scale is also one click on the turret, example. 2.4 Mills is also 24 clicks, which anyone knows that uses MOA knows MOA and clicks are not a direct connect. I would snap up to the number 2 and then 4 more clicks and I'm done. The only real difference that I had to convert my head to Mills was when I write my cheat sheets for yardages I don't put yardage first I put clicks/Mills first.in example, instead of writing 700 yards, which would be 4.64 mils or 46.4 clicks which there is no such thing as I would write it as 697 yards equaling to 4.6 mils or 46 clicks, so I would quickly snap up to 4 and then 6 more clicks and they're done, dead!..... The point I guess I'm trying to make is when your under stress or under the gun & time is crucial, It's very easy to miss those little numbers on a turret. With mills, you snap to your BIG number, count the extra clicks & done, all you need to know is your yardage witch we already need anyway. ( that, & a whole lot of other stuff too) lol