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  • Point of Impact: Patterning

    Shooting for POI

    Question:

    Allen, I really like what you are doing with your website. In regards to patterning you said you basically line up your beads in a flat manner and shoot from a rest. I understand the concept of making sure everything is the same. However, my fit and mount has a space between the beads which allows a more upright or heads up position. My gun was fitted several years ago by Todd Nelson and tweaked a little by LP at one of his clinics. I'm thinking this would not matter when patterning cause we are seeing where the gun actually shoots and how my gun is fitted will impact where the gun is shooting in regards to my mount. So when patterning, should I lower my sight line and line up the beads? The last time I shot a paper I shot freehanded to see how the gun patterned. I blv that is what Todd had me to do prior to my fitting.

    Thanks

    John Bryant

    Answer:

    John

    To answer your question, yes

    The reason for lining up the beads and shooting off a rest is so that you a consistent way of telling where the gun actually shoots when comparing all the tubes and barrel.

    Not necessarily how the gun is set up for the shooter. In other words the gun may shoot 50/50, but the shooter may want to see the target above the gun (60/40), so the comb is raised to get the desired sight picture and POI.

    Also you may want to shoot the gun off the bench with the sight picture you have when shooting the gun. This will tell you what your actual POI is. The reason I say you may want to do this is, loose or add a few pounds and things change that could affect your POI.

    Hope I answered your question, if not feel free to ask more.

    Allen Aka wam

    Setting Point of Impact with Adjustable Rib

    Question:

    Hey Allen, I'd like to ask for some help setting up my new gun.

    I got a used Kolar 2-barrel set. One of the first things I did was set both
    adjustable ribs to 50/50 per the manual. I verified the 12ga barrel and all
    3 tube sets in the carrier shot 50/50 on the patterning board.

    Since then, I've been shooting very well with the 12ga @ 50/50. I'm
    averaging 99 in singles and 97 in doubles. When going to the 20ga, something
    is wrong. My scores go down to ~85.

    I believe The problem is my POI. I practice with IC chokes (the tightest I
    have for the tubes) and I found myself chopping the bottom off a lot of
    birds. I switched the POI to 60/40 (per the rib lines, not pattern board
    verified yet) and I started crushing everything as I typically do.

    After that long background, my question is: how does one "tune" their POI?
    Is it just something you evaluate as you shoot and adjust as necessary?


    Thanks in advance.

    Chad

    Answer:

    Chad
    I think that a 60/40 pattern works best for most shooters, as it keeps the
    target in the shooters view. The difference in the size of a 12ga pattern
    with open chokes vs a 20ga with a ic is a lot of difference. You would
    probably find that things would be even worse with the 410. So what you can
    get by with in the 12ga you won't be able to with the smaller guns. There
    are 2 way to change the poi with a gun with a adjustable rib. You can change
    the rib or you can raise the comb of the gun. Here is what I feel is the
    best way, adjust the rib so that the top and bottom barrel shoot the same
    poi, then raise the comb to get it to shoot 60/40. I have found that most
    shooters float the target and don't even know that they do, I found this out
    by fitting guns to shooters. And the float is something that varies from
    shooter to shooter and seems to be what the shooter get accustom to or used
    to seeing. Now after my long spill, this is how I suggest to tune your poi,
    1st put the 410 tubes in with the tightest chokes and stand on 7 and shoot
    low house targets making comb adjustment until you are truly centering the
    targets. Then put in the 20ga tubes or 12ga barrels and shoot some targets
    on station 4, if the breaks are good leave it alone, if not ,say you are
    knocking the bottom off raise the comb a small amount, if you are splitting
    them in or shooting high let the comb down a small amount (but never get the
    comb so low that if you press your head down as hard as you can and you
    can't see down the rib, always keep the comb high enough to see down the
    rib).

    Oh and by the way it takes about 6 months to really get comfortable with a
    new gun, no matter how good it fits. You may shoot it way better than your
    old gun, because the old one may have not fit you as well. But I can tell
    you that 6 months is what it takes and it gets better after that, the longer
    you shoot it the better it will get to a point.

    Sorry so long, but It was such a good question I wanted it on my website for
    all to read.

    Good luck, good shooting and if I can help more feel free to ask.
    Allen aka WAM

    Contact Me
    Email: allenmccannon@yahoo.com