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Adjusting a BT-99 Plus ?

Discussion in 'Shooting Related Threads' started by RDM, Jun 13, 2011.

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  1. RDM

    RDM TS Member

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    Jan 29, 1998
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    Got a BT-99 plus, and shot it for the first time last Sat. night. Didn't do to bad but could have done alot better. The ones I broke I didn't break very hard (big pieces). The ones I missed I felt like I was on the target, but also felt like I was shooting under them, and even had guys watching saying that they felt like I was shooting under them also.


    So I have raised the rear of my rib. I hope that this will make me shoot a little higher.

    Did I do the right thing by riasing the rear of the rib?
    Just trying to get the gun to hit where I point it.

    Thanks.
     
  2. grntitan

    grntitan Well-Known Member

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    Does the gun have an adjustable comb?
     
  3. showdawg

    showdawg TS Member

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    raise comb as well to raise poi.
     
  4. mikkeeh

    mikkeeh Active Member

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    Mount Vernon Ohio
    Raising the rear of the rib only serves to change the sight picture that you see. ie.how your beads line up. To lower the POI you need to lowers the comb, or raise the front sight...or both.

    I would first shoot a pattern board to see where the POI really is. Then adjust from there.

    Hope this helps.
     
  5. cunninmp

    cunninmp Member

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    RDM,

    On my 99 Plus I lowered the front of the rib and then started raising

    the comb until I got a 90/10 pattern. Rear of the rib doesn't have enough

    adjustment. But, you have to have access to a pattern board to do this.

    Adjustments can be made on the spot. Thats why Browning supplied the punch

    to knock out the roll pin in the front. Also did the same with Citori

    Plus. Worked like a charm for me. It just depends how high you want your

    POI to be.

    Mike C.

    Groveland, CA
     
  6. Oregunner

    Oregunner Well-Known Member

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    The manual is on the Browning website. It does a pretty good job explaining the adjustments for the BT-99 Plus (see link)
     
  7. RDM

    RDM TS Member

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    Jan 29, 1998
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    My comb is adj., and I have the front of the rib as low as it will go and have raised the back of the rib. I have set the comb to give me a clear line of sight down the barrel. I think I am on the right track with what you folks are telling me.
     
  8. Borderland

    Borderland Member

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    Aug 10, 2008
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    BT99 Plus & Citori Plus have adjustments of 3 6 9 & 12 inches high and anything in between plus the comb height will affect all this also. Rib all the way down in front and all the way up in the rear and the comb set for figure 8 picture has an approximate POI of 12 inches high. Of course many factors of gun fit affect the POI

    Ken
     
  9. CalvinMD

    CalvinMD Well-Known Member

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    From my experience if you're busting out the bottoms..put a full 1/4" under the comb and try it...my bet is smoke as long as you're pattern is centered left to right on paper...the spacer is going change the gun from something patterning probably 50/50 for you to more like 70/30...if it makes you more comfortable go up 1/8" first then add 1/16" washers until you are centering targets hard...good luck..you've got one of the most capable guns for the money on the trapline
     
  10. GoldEx

    GoldEx Active Member

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    I have had about a half dozen plusses both Citori and BT-99. Be very careful driving out that front rib pin. Use the correct sized roll pin punch (unless you have the browning factory tool that came with the gun) That set up in my opinion is the worst feature of an otherwise great trap gun. Many a Plus rib has been damaged by ham fisted trap shooters. They are fragile and bend EASILY.

    JK
     
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