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Old March 5, 2012, 01:52 PM   #9
DWFan
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Join Date: April 25, 2008
Posts: 305
Yes, they do...including starting from scratch whenever you buy a new lot of powder. That being the case, their data is only a "best guess" as it wasn't created using exactly the same powder that you have.
If that sounds cynical, it is. I shoot the .357 Maximum in a Dan Wesson SuperMag and attempting to go thru published data to achieve an optimum load is an exercise in patience and futility.

Last edited by DWFan; March 5, 2012 at 02:00 PM.
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