1. Attention: We have put together a thread with tips and a tutorial video to help with using the new software. Please take a moment to check out the thread here: Trapshooters.com Tutorial & Help Video.
    Dismiss Notice

understanding chokes

Discussion in 'Shooting Related Threads' started by edthearcher, Feb 25, 2009.

Thread Status:
Not open for further replies.
  1. edthearcher

    edthearcher Member

    Joined:
    Jul 9, 2007
    Messages:
    191
    Location:
    wisconsin
    o.k. you guys help me out. briley choke full catalog says const .035 now I take my digital caliper it says 0.707. now I know there must be a simple trick to this help thanks Ed.
     
  2. timb99

    timb99 Well-Known Member

    Joined:
    Jan 29, 1998
    Messages:
    7,331
    Location:
    Shawnee, Kansas, USA
    0.035 is the difference between the barrel bore diameter and the choke constriction diameter.

    The fact that it measures 0.707 means that it is made for a barrel with a 0.742 bore diameter, which is quite a bit larger than standard (12 gauge is nominally 0.729")

    Do you know what your barrel bore diameter is?
     
  3. School Teacher

    School Teacher Well-Known Member

    Joined:
    Jan 29, 1998
    Messages:
    2,052
    Location:
    Louisville, KY
    Ed:

    Another way to think about it is the .035 represents 35 points of constriction with each point equal to .001".

    Each point of constriction then represents an internal diameter change of minus .001" from the diameter of the normal bore. A standard 12 gauge bore is .729". However, the current trend is to provide overbored 12 gauge barrels which are larger than .729" so as to reduce recoil and improve patterns.

    Ed Ward
     
  4. edthearcher

    edthearcher Member

    Joined:
    Jul 9, 2007
    Messages:
    191
    Location:
    wisconsin
    thanks guys I knew you would come threw ED
     
Thread Status:
Not open for further replies.