From Westernrifleshooters
The six o'clock hold gives beginners (and especially not-so-newcomers) a big advantage, in that it forces shooters to concentrate on the front sight post so that they can be sure that the target is just perched on the front post. That's where a more colorful name for the six o'clock hold - "pumpkin on a post"- started.
The key point to remember is that the human eye simply cannot focus with equal clarity on three distinct items located at varying distances from the eye - in other words, the rear sight, the front sight post, and the target itself. That issue being a fact of human biomechanics, the shooter must choose one item and let the others blur to a greater or lesser degree.
Which to choose?
Always choose the front sight post to be clear. It will be hard to discipline yourself at first - you and your eyes will want to try to focus on all three objects, or the target, or the rear sight, all at the same time. Take a deep breath and concentrate only on the front sight, and making sure that as you begin your trigger squeeze, that sharp front sight post stays right there, at the six o'clock position of the round (but somewhat fuzzy) bullseye target.
Say to yourself: "Sharp front sight, pumpkin on a post. Sharp front sight, pumpkin on a post."
Keep repeating that mantra, while allowing yourself only enough attention to the rear sight to ensure that your front post is still centered and on the same level as the "ears".
Do that on every shot, and you'll be a superstar. Promise!
