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My current gun came with Hi-viz competition sights. I am currently using the largest diameter white bead.--Just use the sight for gun alignment only. Would the smaller beads have any effect. If they don't why do they make different diameter sights?

Lou
 

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I learned to shoot without a bead then had to put one on when I changed to one eye. I use a little hiviz bead I get from Walmart for $5.00 and then grind it down to about the diameter of a 6 penny nail. Works for me.
 

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Going from a large diameter front sight to a small diameter front sight will make your guns' POI shoot higher. Conversely going from a small diameter front sight to a large diameter front sight will make your guns' POI shoot lower.
 

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Reducing the front sight diameter by 1/32 of an inch would change the POI by 1 1/8 at 30 yards (if I hit the right keys on my calculator). This would be only true if the shooter was using the front sight to aim at the target. If he does this, he has a much greater problem than a small change in the POI.

Calculation- There are 36 30' segments in 30 yards-- 36/32 = 1 1/8

Pat Ireland
 
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