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Mag primers in non-mag cartridges?

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  #1  
Unread 03-19-2005, 07:38 PM
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Mag primers in non-mag cartridges?

Any thoughts on using magnum primers in non-mag cartridges

I used them in a .257 Roberts with a slower powder and had excelent results. Nothing seemed to work until I tried this combo.
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  •   #2  
    Unread 03-19-2005, 07:51 PM
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    Re: Mag primers in non-mag cartridges?

    I use them in everything. 22-250, 6mm, 25-06, 25-06AI. CCI-250 by the 1000 count brick. Always have and see no reason not too.
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      #3  
    Unread 03-20-2005, 01:18 AM
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    Re: Mag primers in non-mag cartridges?

    Mag primers can raise pressure in non-mag cases. No hard & fast rule, but working up loads over a chronograph will tell you the truth. Changing primers (different brands & mag & non-mag)can cause velocities and deviations to really change. Only the chrono knows! [img]/ubbthreads/images/graemlins/blush.gif[/img]
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      #4  
    Unread 03-20-2005, 07:25 AM
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    Re: Mag primers in non-mag cartridges?

    i'm not an expert but my .02 .#1 mag are better in cold weather say 10f or below #2 using 60gr of powder or more.#3 hotter = higher pressure so careful at max load at std primer list.
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    Unread 03-20-2005, 12:25 PM
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    Re: Mag primers in non-mag cartridges?

    Rimfire,
    I have also used them alot for the "non-magnum" cartridges. I use them in my .22-250, .243, .260 and .25-06 right now. I usually try them after extensive load development with standard primers turn up nothing. Johnny K.
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      #6  
    Unread 03-20-2005, 01:03 PM
    LB LB is offline
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    Re: Mag primers in non-mag cartridges?

    Other than cold weather performance, or a substantial quantity of hard to ignite ball powder, there is not much reason to use a mag primer, except for the thrill involved?

    I think mag primers, in hot varmint cartridges are not recommended. If you accept the theory that capacity versus bore size will indicate a slow burning rate powder, then the mag primer defeats the purpose, and accelerates your burning rate, yielding slower velocity than a controlled burn with a large rifle primer.

    In my 300Winchester, for example, I have always used W8 primers and 80 grains of H4831, which produces a relatively hot spark (165) I could be wrong(?) but I think that Winchester uses that exact primer in loaded 300 Win Mag ammunition. And, yes, it is a hot large rifle primer. That tells me that Mag primers have a very narrow application. In other words, not a blanket solution. Unless you have a definite purpose, and understand the cause and effect.

    Good hunting. LB
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      #7  
    Unread 03-20-2005, 01:18 PM
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    Re: Mag primers in non-mag cartridges?

    I use mag primers in a .244 AK with heavy bullets and an '06 AK with the heavies.
    db
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