FIXED CHOKE IDENTIFICATION

gregw

April 06, 2015 10:06

How can you tell if the barrels on fixed choke shotguns are Full, Mod, IC etc etc. On the barrels of the Over Under I have, they are marked with 4 stars and 3 stars.

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  babun

  April 06, 2015 10:27

  Find your gun here, generally the more stars the looser the choke.
  
  https://www.trulockchokes.com/choke-identification-tool.php

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  TRAP55

  April 06, 2015 10:27

  It would help to know what make of O/U.
  This is for Browning
  
  * designates full choke (F).
  
  *- designates improved modified choke (IM).
  
  ** designates modified choke (M).
  
  **- designates improved cylinder choke (IC).
  
  **$ designates skeet (SK).
  
  *** designates cylinder bore (CYL).
  
  Identification Stars on Spanish shotguns
  Cyl. = ***** stars
  Improved Cylinder = **** stars
  Modified = *** stars
  Improved Modified = ** stars
  Full = * star

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  geeguy

  April 06, 2015 10:32

  In addition to the info above:
  
  "Most" 12 ga. measure the following:
  Bore= .727"
  SKT = .727"
  IC = .719"
  MOD = .715"
  Full= .697"
  
  A US dime is .705" dia. - so if a dime won't fit you know the 4 star is Full and can assume the 3 star is modified. If you have instruments you can measure the dia.
  
  Best of luck.

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  charliemeyer007

  April 06, 2015 11:31

  Pattern it on paper, 30" circle at 40 yards from the muzzle. http://en.wikipedia.org/wiki/Choke_(firearms)

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  duckhunter

  April 06, 2015 12:12

  Dime is sure lots less work that shooting and measuring. [:D] [:D]

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