Originally Posted by
GJM
I think the desire for small moa red dots came from folks shooting the Aimpoint on a rifle at longer distances, and when the T1 became available in 2 moa, we thought that was a good thing. On pistols, unless you are trying to shoot 100 yards and further, I think a larger dot size is an advantage as:
1) a larger dot seems less wiggly
2) the larger dot is easier to pick up quickly when drawing or transitioning
3) the larger dot allows you to run it at a lower intensity, unlike smaller dots that you need to bloom
While there are exceptions, the vast majority of skilled competitors at USPSA matches are using a 5 or 6 moa dot.