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Need help determining choke in Belgian guild gun

Discussion in 'Firearms Research' started by jclifton, Jul 22, 2008.

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  1. jclifton

    jclifton Member

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    Hey Guys, I'm new to THR but have seen this sight in a lot of references.
    I just purchased an old Belgian Guild gun and was wanting a little help in the choke department. It is a 16 gauge SxS with 16.4 over 16.9 and 16.2 over 16.9 written on the bottom of barrels. In another place it has 16.4 over 17.0 and 16.2 over 17.0. Any help would be greatly appreciated. My research says that the 16.4 and 16.2 is the choke in millimeters. I think 16.4 is .646 and 16.2 is .638 but don't know how to convert that to modified, improved cyl, etc. Thanks.


    ______________________
    Jim
     
  2. Jim Watson

    Jim Watson Member

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    Well, 17mm is the bore diameter, .669" so you have .669-.638=.031" constriction on one side and .669-.646=.023" constriction in the other.

    Extrapolating from 12 gauge, that is probably full and a close modified.

    But the only way to know for sure is to shoot the gun at paper and count all the little holes.
     
  3. jclifton

    jclifton Member

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    Jim, thanks for the info. I will be paper testing as soon as work allows.

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    Jim
     
  4. Vaarok

    Vaarok Member

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    Guild guns usually, and this is a stretch, have one full choke barrel and the other Imp Cyl or Mod choked. The idea being you have close, long, and long-range rifle, or close/long and a finish-off-wounded-game caliber.
     
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