This is the second session using the circle plus dot as the reticle in the Holosun red dot. Over 40 shots and I don't think I perceived the dot going oblong. When you see 7 shots in less than 3" at 100 yards, even if it is out of 20 total for the target, the eyes and pistol have to agree on where the hits will be. I may switch out my FF3 sights for the Holosun if this keeps up.
I gotta try the circle plus dot on the P-10F next. If I see an improvement there, then I'll gradually shift over to the Holosuns.
Joe