Primer question
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Thread: Primer question



  1. #1
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    Primer question

    I recently received some 45 acp brass with small primer pockets.My question is:can I use small pistol magnum primers with the same powder charge or do I have to reduce the charge-if I can use them at all? I'm shooting a Rem 1911.Thank you guys in advance for your help and experience.

  2. #2
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    Just use small pistol primers. From what I've read there won't be much if any difference between the two because of the size of the flash hole. Personally if it wasn't many pieces I'd recycle them or sell them. They're a pain in the butt to separate after a day of shooting and I haven't been happy with accuracy compared to a large primer.
    As I understand it, these rounds were only developed to be EPA compliant in indoor shooting ranges because most of the gasses they are concerned about come from the primers. There's quite a bit of info on this in some of the other 1911 forums.
    Travlin likes this.

  3. #3
    Tenderfoot
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    Unless you have a tone of them, just toss them in the brass bin. I save the ones I have after a few choice words when I find them and the large primer wont seat in them on my 550, then I use them for my Webly and they are in moon clips so I dont contaminate the range with small primer 45acp, I just toss the moon clip back in the bag.
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    Quote Originally Posted by Slugnut View Post
    I recently received some 45 acp brass with small primer pockets.My question is:can I use small pistol magnum primers with the same powder charge or do I have to reduce the charge-if I can use them at all? I'm shooting a Rem 1911.Thank you guys in advance for your help and experience.
    45 ACP is typically loaded with fast burn powder (like 5 grns Bullseye). You don't need a mag primer to ignite that small charge and using a mag primer may cause high pressure. Large pistol Std primers have been Std for a long time with 45 ACP.

  6. #5
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    There's not enough difference between a SPP and a magnum SPP for 99% of the world to tell. Manufacturers other than CCI don't even make more than one kind.
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  7. #6
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    Quote Originally Posted by GasGuzzler View Post
    There's not enough difference between a SPP and a magnum SPP for 99% of the world to tell. Manufacturers other than CCI don't even make more than one kind.
    Actually Winchester, Federal, Remington and Wolf also market small magnum pistol primers.

    Blessed are the flexible for they shall not be bent out of shape.

  8. #7
    Esteemed Sharpshooter
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    The book answer is to decrease powder charge by 10% when substituting magnum primers. I agree with the advice you were given.
    rob42049 likes this.
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  9. #8
    Tenderfoot
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    My bad, I guess I never really answered your question. No you do not need magnum primers for them. Load them up all day with regular no worries. And if all you have is magnum primers, thats still no worries. 45 case in a 1911 with a regular load and a magnum primer cannot reach +p levels and if it ever did with some wonder powder a 1911 can handle +p. Hope this helps, but i would still toss them if you have no use for them


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