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Patterning Question - how to identify POI

Discussion in 'Shooting Related Threads' started by Turnpike Mike, Feb 10, 2009.

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  1. Turnpike Mike

    Turnpike Mike TS Member

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    When I am patterning my shotgun - if I put the black dot/circle on the pattern paper right on top of my front bead (i.e., my front bead is touching the bottom of the black dot/circle on the pattern paper) and the pattern shows even distribution around this black dot/circle what POI is this?
     
  2. BigM-Perazzi

    BigM-Perazzi Well-Known Member

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    *sigh*... sorry TM.... If you use the search function, type in POI, You'll find volumes of information on this subject. My suggestion, email Neil Winston and get his direct opinion on how to do it.....

    My $1.00's worth.

    Jim chapman

    <img src="http://i75.photobucket.com/albums/i303/BigM-Perazzi/DSCF0039.jpg"
     
  3. Neil Winston

    Neil Winston Well-Known Member

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    Turnpike, if that happens as you describe, your barrel is referred to as "flat shooting." Or zero inches high.

    Neil
     
  4. Turnpike Mike

    Turnpike Mike TS Member

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    Neil,

    I thought "flat shooting" was when there was an even pattern distribution around the circle when you covered it with front bead - as opposed to when it rested atop of the bead?
     
  5. hmb

    hmb Well-Known Member

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    How big is the cicle? HMB
     
  6. Turnpike Mike

    Turnpike Mike TS Member

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    Not to belabor my question or this post - however I could not find a specific answer to my question using the search POI funcation on this website. Ergo, if someone could be kind enough to provide me some insight to this question I would really appreciate it. Thanks.

    ++++++++

    When I am patterning my shotgun - if I put the black dot/circle on the pattern paper right on top of my front bead (i.e., my front bead is touching the bottom of the black dot/circle on the pattern paper) and the pattern shows even distribution around this black dot/circle what POI is this?
     
  7. djpk69

    djpk69 TS Member

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    You keep saying "black dot/ circle". Is this a DOT or a 10",20",30" Circle?
     
  8. JerryP

    JerryP Active Member

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    If you have about as many pellets below the black dot as above, it is as Neil stated.
     
  9. setter

    setter Member

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    If the "black dot" is in the center of "your circle" and "the pattern shows even distribution around this black dot/circle", then its as Neil described, also referred to as 50/50. If; however, "your black dot" is at the bottom of "your circle" and you aim at the black dot and all the shot is above the black dot then POI can be referred to as 100% high and applies to whatever distance was used.
     
  10. edthearcher

    edthearcher Member

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    I also agree with 50/50
     
  11. zzt

    zzt Well-Known Member

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    Mike, I understand your question. The answer is your gun shoots x" high at y yards, where x is the radius of your black dot/circle and y is the target distance in yards.

    You used the top of your bead as the sight. You aimed at the bottom of your black dot/circle. That was your POA. Your POI was higher than your POA by the radius of your black dot/circle. That's why hmb asked how big your circle was.

    Let's suppose your black dot/circle was 2" in diameter (1" radius) and the target was 13 yards away from the muzzle. Your POA was the bottom of the black dot/circle. Your POI was the middle of the black dot/circle. So if your black dot/circle has a 1" radius, your gun shoots 1" high at 13 yards. That's a touch over 3" high at 40 yards, or a 60/40 shooter in the old parlance.
     
  12. RAScott

    RAScott Member

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    Try getting the "little trapshooting book" Written by Frank Little. It is explained pretty well . I.E. Stand 13 yards away full choke. draw a target the shape of an cross. aim and squeeze the trigger as with a rifle this will give you a specific poi. the you can do the math for the distance that you break targets 39 yard typicaly. 2" high @ 13 = 8" high @ 39 yards something like a 60/40 Bob S
     
  13. Spanky

    Spanky Active Member

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    I would follow what ZZT is saying at first. It makes no sense in putting a target out there 30-40 yards at first and start counting bb holes and guessing POI. At the 13 yards + or -, pattern it will be tighter, POI will be very noticeable.
     
  14. phirel

    phirel TS Member

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    Bob S. "2" high at 13 yards = 8" high at 39" ? Am I missing something? I get 2 X 3 = 6 (-2" for gravity).

    Pat Ireland
     
  15. zzt

    zzt Well-Known Member

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    Yikes, Pat!
     
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