Originally Posted by
jack crab
Intuitively, a head is about an 8 inch circle. A 4 MOA dot is roughly 8 inches at 200 yards. So, beyond 200 yards the aiming point is bigger than the target. If using POA=POI, the shooter cannot determine where the dot is on the target because the dot obscures the target.
That rationale is supported by the 2 MOA dot reaching to 400 yards where a 2 MOA dot becomes about 8 inches.
The EOTech is odd. It should theoretically go to 800 yards with a 1 MOA dot. I am wondering if it becomes a physical limitation of eye balls, the glass, light transmission, etc. rather than a sight and target issue.
Could it be that the dot sizes are not true to their names, i.e., the true dot size is 3.2 MOA but the manufacturer rounds it to 4 MOA.
Query: If one uses a 3x magnifier located between the shooter's eye and the sight, should there be no difference in the outcome? The magnifier just makes the dot and the target 3x bigger.