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Old April 12, 2013, 11:20 PM   #16
Jimro
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Join Date: October 18, 2006
Posts: 6,765
Try fixing a heavy weight on the end of your barrel. I recommend something in the two kilogram range or heavier.

If it is harmonics the extra mass will dampen them and shift POI between the two loads closer together.

Simple experiment for a physicist.

If the POI difference remains the same, clearly it is a mechanism other than harmonics at work.

Jimro
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