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Old October 6, 2012, 02:48 PM   #11
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Join Date: June 15, 2008
Location: Georgia
Posts: 7,092
As to difference in velocity, I've chronographed some .357 Magnum loads that are considerable higher out of my 4" Model 586 that out of the 6" gun. This with Hercules (now Alliant) #2400 powder.
This is not unusual and why comparing the velocity between 2 different guns is not reliable. If you were to shoot the same loads through the same gun, starting with a longer barrel and cutting it as you measured the velocity you will see pretty consistent velocity loss.
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