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Old June 9, 2012, 08:45 AM   #10
Brian Pfleuger
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Join Date: June 25, 2008
Location: Western Colorado, finally.
Posts: 19,118
The theory is that boat tail bullets are exposed to the muzzle blast for longer than flat base.
Because of this, they take some time to recover and eventually the enhanced BC overtakes the flat base.
The number I see mentioned is usually 300 yards before the boat tail comes into its own.
Obviously, any given gun/shooter/bullet/powder combination may not follow the theory.
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