From: Pat Ireland
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Date: Sun, Mar 02, 2008 - 05:46 AM ET
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Handlepuller- Shoot several tests and use a rest. It is too easy to pull a shot off the target without a rest. Eighteen inches high (+-100%) is high but many shooters shoot guns that have a POI similar to this.
Multiplying the number of inches high at 13 yards by 3 is not a bad estimate of the POI. A bit more precise estimate would by the inches high at 13 yards times three, minus 3 inches (fall due to gravity) plus three times the distance from the center of the bore to the front sight.