He gets the application wrong, radian coresponds to arc length. You have to solve for the base of the isosceles triangle to get the linear measurement. You can look at the diagram to see that a straight line between two points will be shorter than an arc between the same points.This explains it easily and far better than I can.
Long Range Shooting - MOA and MILS explained
A MIL or an MOA linear equivalent increases proportionally with distance. With the MOA and MIL systems, you correct the position of the reticle inside the scope, based on wind deflection and trajectory of the bullet at the target’s distance.www.longrangeshooting.org
I’m trying to figure out what you’re saying here or your math. I’m completely aware of 1.047 for accurate MOA. But the part about being off by 2” at 400 yards. From what starting point out to 400 yards are you having a 2” difference due to going from a 1.047 MOA to SMOA of 1.0 MOA?Glad it helped. In my, average at best, level of shooting, the issue I see with moa is the rounding down from 1.047 to 1. With that same distance and drop, you'd dial 9.07, or realistically 9 moa. That extra .5 is a 2" difference at 400 yds. Is it enough to matter? Maybe. Say you make a shot 5" low. You're likely still getting lung towards the bottom. Now add in that extra 2" and maybe you're under the lung. Longer you go, the more off you are. Do the actual math and there's no difference.