Hi, my name is Chris, and I have a confession to make.
I have never been able to consistently hit a 3x5 index card at 25 yards offhand.
More to the point, I can barely see a 3x5 card at 25 yards. I can't see one at all if I'm focused on a front sight that's two feet from my eyeballs.
So I have a question for the folks who can stay on a 3x5 at that distance - how are you doing it? Do you shoot with a target focus? Is your visual depth of field such that you can maintain focus at such varying distances? What am I missing here?