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Old 03-12-2014, 05:21 PM
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DrHenley DrHenley is offline
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Depends on the brand. Some magnum primer just have thicker cups. Some have a little more brisance. Some have a LOT more brisance. The 45 ACP has a large margin of error and is not susceptible to the pressure spike problems of say a 40 S&W.

Long story short, I use magnum TulAmmo primers in 45 ACP and can't tell the difference...(I scored a case of 5000 cheap )
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