He needs to find his meds again. Most of this gibberish he spouts is an attempt to look like he knows what he is talking about.
Those who actually do know about these things recognize the facts and have very little trouble with the comprehension end of it ! Others have the choice to be enlightened or remain ignorant and that is the stupid part !
Mr. M De Land - Would you expand on “cross axis sight dysfunction”? What do it mean?
If the rear sight is not square and plum to the front sight then your eye is always having to try and compensate for the out of square angular component that grows exponentially with distance. If they are not square and plumb to each other than we have introduced another accuracy component of tangent to the equation.
When we build aperture sighted long range rifles we go to great pains to make the front sight and rear tang square to one another. With a Soule rear sight and a staff of 4 inches length the cross angle can get pretty sever at the top if not made square and plumb to the front.
There are some sights like the Buffington which had a tangent angle built into them for spin drift compensation but it does not work as well as a Soule type that keeps things square and plumb with corrections made on a grid pattern instead of tangent.
The more square and plum the sighting the more potential for increased score. The thinking is to remove as much accuracy causing dysfunction from the gun and load as possible so all the foibles are on the shooter which can be compensated for.
This becomes readily apparent with mid and long range rifle shooting competition. It is much less an issue with pistol short sight radius but begins to show up when one tries to hit at extended ranges with a hand gun.
Nothing is more obviously "Kitty Whumpus" to my eye when looking over a square notch rear sight to a front blade that is not perpendicular to the rear notch.