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yardage for pattern board

Discussion in 'Uncategorized Threads' started by IA_Waterfowler, Sep 2, 2007.

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  1. IA_Waterfowler

    IA_Waterfowler TS Member

    Jan 29, 1998
    From Chris Batha.com

    Q: What is a pattern plate?
    A: The pattern plate’s role in gun fitting is to check the point of impact of the pattern, its pellet distribution and position. This is utilized in gunfitting by firing at the plate from fixed positions. The eye, on average, is three feet from the end of the barrel. If the plate is shot from the 16 -yard marker, the mathematics of three feet into 16 yards equates that 2 inches on the plate is an eighth of an inch on the gun. Thus, if you are a right-hander shooting four inches to the left of the aiming mark then you would require one quarter inch of cast-off to align the gun to the eye. This formula is applied equally at 32 yards with 2 inches representing a sixteenth of an inch on the gun. Used this way, the pattern plate gives accurate feedback to the gunfitter to make the necessary adjustments to achieve a perfect fit
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