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Discussion Starter #1
Assuming no change in shot velocity(1165fps)how much should the comb be raised @ 21-22 yard line? @ 27 yard line? I presume the POI should remain constant at differing yardages?

Thanks!

WNCRob
 

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I agree that 16yd and handicap POI should be the same. Whatever height you add to the comb you should multiply by 32 - for example 1/8 inch added to the comb height will add 4 inches to your POI at 40 yards.
 

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Figure out what affect gravity has on your shot pattern and they you will know how much to raise your comb. HMB
 

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Discussion Starter #4
My seat of the pants math would indicate raising the comb 1/16th at 21-22 yards and 1/8th at 27 yards, plus an allowance for the effects of gravity. I'm sure some physics/ballistics expert has this figured out more precisely.

WNCRob
 

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I wish I could point the darn thing well enough to see the affect of a 1/16" comb change. We get too "cute" with stuff like this.

I just smile when I see an excellent shot who is ink-balling 20/25 move their comb by a 1/16" after missing a bird. Like that is going to matter?

A HOF shooter told me a 1/4" rib adjustment on a K-80 would move the pattern 4 feet. My rudimentary trigonometry skills could not prove this assertion.

Don Verna
 

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POI is an important variable here. In general, high shooting gun requires little to no comb adjustment whereas a flat shooting gun would require adjustment all other factors considered equal. My gun shoots 100% high and find no comb adjustment required and my sight picture is fairly consistent on straight aways 16 - 27 yards
 
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