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Old August 13, 2011, 10:24 PM   #10
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Join Date: August 23, 2008
Location: SoCal
Posts: 6,442
Pattern the loads you'll be shooting: factory and/or reloads.

Yes, counting the holes (quite time consuming with #9s) in each quadrant will tell you how the center of the pattern relates to the point of aim. You may have seen shotgun reviews where they will publish the deviation for each barrel along with pics of the patterns.
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