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**Brian Pfleuger** · January 24, 2012, 10:54 PM

I did a small experiment like that myself, Catfish.

Regular and magnum primers in 357sig.... no difference in velocity whatsoever.

January 24, 2012, 10:54 PM	#5
Brian Pfleuger Staff Join Date: June 25, 2008 Location: Central, Southern NY, USA Posts: 14,670	I did a small experiment like that myself, Catfish. Regular and magnum primers in 357sig.... no difference in velocity whatsoever.