308 and magnum primers

Jcaplinger199

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Nov 5, 2019
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Not new to reloading but new to .308
I have 1000 fed215m that I bought to reload for my weatherby but I sold it. I wanted to use them in my 308

Haven’t done much reloading with magnum primers in standard cartridges. What’s a good starting point for below powders. I guess I just really need to know if it’s safe to start at the manual minimum charge or if I would need to start below the manual minimum charge. If so how much? Thanks

24 inch proof stainless barrel 1-10 twist
Lapua LR brass
Berger 185 juggernaut
Vv150, imr 4895, varget
 

Gohring65

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  • Feb 13, 2017
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    Just work up a normal start loads, I’ve personally never had pressure problems by switching to mag primers.
     

    whatsupdoc

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  • Dec 12, 2017
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    You can use Mag primers in 308, just use common sense and work up your load.

    I have used mag primers in many standard calibers with good results.
     

    Jcaplinger199

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    Nov 5, 2019
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    You can use Mag primers in 308, just use common sense and work up your load.

    I have used mag primers in many standard calibers with good results.
    Of course, just since I hadn’t done it before I wanted to make sure I didn’t need to start below the manual minimum. Since the Manuals are specifying standard LR primer. Thanks
     

    nightman89

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    Jun 6, 2020
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    If you already have a good load developed with LR primers, maybe just do a pressure ladder to see if any overpressure signs develop up to your known charge weight. If you have a chrony you can check speeds as well to see how they compare to your known velocity. Be quicker than running through a full load development that may potentially not be needed.
     

    Mr Tibbs

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    Aug 17, 2020
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    Not new to reloading but new to .308
    I have 1000 fed215m that I bought to reload for my weatherby but I sold it. I wanted to use them in my 308

    Haven’t done much reloading with magnum primers in standard cartridges. What’s a good starting point for below powders. I guess I just really need to know if it’s safe to start at the manual minimum charge or if I would need to start below the manual minimum charge. If so how much? Thanks

    24 inch proof stainless barrel 1-10 twist
    Lapua LR brass
    Berger 185 juggernaut
    Vv150, imr 4895, varget
    Those powders are to fast burning for a magnum primer ,which has a hotter and longer burning flame. If at all possible try to use a slower burning powder to get the most efficient out of the magnum primer.
     

    Rocketmandb

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  • Nov 2, 2018
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    Food for thought:

    Right now, 215Ms are much more difficult to come by than something like BR2s.
     

    264Proto

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    Apr 14, 2022
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    Not new to reloading but new to .308
    I have 1000 fed215m that I bought to reload for my weatherby but I sold it. I wanted to use them in my 308

    Haven’t done much reloading with magnum primers in standard cartridges. What’s a good starting point for below powders. I guess I just really need to know if it’s safe to start at the manual minimum charge or if I would need to start below the manual minimum charge. If so how much? Thanks

    24 inch proof stainless barrel 1-10 twist
    Lapua LR brass
    Berger 185 juggernaut
    Vv150, imr 4895, varget

    nato spec ammo uses #34 primers which are magnums