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Magnum primers in non-magnum load

This is a discussion on Magnum primers in non-magnum load within the Reloading forums, part of the Firearm Forum category; Just want to say thanks to our resident expert Iowegen for his comments about this topic a few months ago. I was recently in a ...


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Old January 28th, 2017, 03:18 AM   #1
 
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Magnum primers in non-magnum load

Just want to say thanks to our resident expert Iowegen for his comments about this topic a few months ago. I was recently in a discussion where one guy was prefacing his comments about "rule of thumb" to reduce your loads by 10%.

I argued with him and won after showing him Iowegen's comments on an older post on that topic.

Thank you for sharing your expertise....



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Old January 28th, 2017, 05:03 AM   #2
 
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that was always the "rule" but not always true. as you have mentioned.
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Old January 28th, 2017, 07:30 AM   #3
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kf6zpl, When using the "best practice" concept, you only use magnum primers with designated slow burning powders. That said, Hornady lists all their 357 Mag loads with magnum primers .... no matter what powder is used. Although I think this is a poor practice, at least Hornady does SAAMI approved pressure tests on each load. This is notably safer than just swapping a mag primer for a standard primer and guessing at the outcome.
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