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Old September 3, 2012, 10:16 AM   #6
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Join Date: November 8, 2007
Posts: 2,001
You did not specify how many shots you used to compute the SD and ES for the two guns. The only way to determine if the difference was due to chance or actual physical differences is to apply statistical tests which involve the actual number of shots.

That said, the differences in velocities from gun-to-gun, and even chamber-to-chamber in the same revolver, can often be substantially greater than what you posted.

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