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Old March 31, 2009, 11:59 AM   #13
WCW
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Join Date: March 6, 2007
Posts: 132
For what it’s worth, I use more non magnum primers in my .357 than anything else, and I have never had any issues with a standard primer working any less efficiently than a standard primer with most of the powders I typically use, even some ball powders. In comparisons through a chronograph I have never seen any really dramatic difference in velocities either, but it‘s always wise to work up a load when changing any component.

I have noticed a definite difference in accuracy when using a magnum primer versus a standard, so you might want to do a little experimentation there. Two particular loadings of mine that use 2400 and VV N110 give far better accuracy when using a standard primer versus a magnum, so you never really know what effect that may have in your handgun either.
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