my problem with aperture size is when it is far way, it "Seems" to block off too much sight picture, whereas the "Ghost Ring" lets you look around it, BUT there appears a bright spot in the middle with the target lit up...
I dunno why, perhaps my cadillacs are causing the issue.
i did get a merit adjustible to use for sight in and such.
I'm going to have to pay attention to the size vs group