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Near the end of the article, he mentions that some people say that it's more difficult to aim a weapon that has a shorter sight radius. Actually, I think it's more accurate to say that having your sights out of alignment with shorter sight radius will have a more dramatic effect on your accuracy.

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Or put another way, a shorter sight radius by a factor of X makes it X times harder to visually confirm your iron sights are correctly aligned. This makes the visual-mental-physical feedback loop of keeping them aligned as precisely as you possibly can, much more difficult.

Shooting accurately is much more than just physically holding the barrel steady; it's a whole "symphony" of coordination, involving physical, visual and mental components.

That's a great way to explain it.

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