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Old January 12, 2013, 02:07 PM   #20
Bart B.
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Join Date: February 15, 2009
Posts: 4,639
When one "tunes" their handloads to barrel vibrations, they're changing the point in the barrel's vertical whip cycle at the muzzle so bullets leave at different angles relative to the line of sight. Adjusting the powder charge weight is the best way as that has the greatest effect on muzzle velocity and barrel time without effecting accuracy for a given bullet seating depth.
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