primers

Discussion in 'Reloading' started by mooser, Mar 27, 2012.

  1. mooser

    mooser Well-Known Member

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    Jan 26, 2007
    why are some of you recomending the use of standard primers in magnum loads? If they are better then why bother to make magnums?
     
  2. Tikkamike

    Tikkamike Well-Known Member

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    Dec 26, 2009
    No idea what you are talking about. if you name a specific example maybe we could help you out, or better yet go to that thread and ask that person. I have never done it my self and I dont know anyone who has either
     

  3. Mikecr

    Mikecr Well-Known Member

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    'Better' is always a matter of what shoots best for each of us.
    And nobody can predict brand or type in brand -as better for you.
     
  4. J E Custom

    J E Custom Well-Known Member

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    It is a matter on testing the rifle and seeing what works the best in your powder,case and
    powder grain amount.

    Often a standard primer lowers the Standard Deviation in magnum cases but does not
    lower the velocity by very much.

    The standard primer can work well in magnum cartriges under 90 grains capacity with some
    powders .

    Cases that have a case capacity of 90 to 135 grains normally do not respond to the standard
    primers well and need magnum primers.

    So it is a case of how much powder, what kind of powder and bullet weight.

    The 7 STW is about the max that I have found that in some cases responds to standard primers
    I have not seen larger cases respond well to them. others may have different results.

    J E CUSTOM
     
  5. rscott5028

    rscott5028 Well-Known Member

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    Apr 18, 2010
    The concept of "magnum" is purely arbitrary. Hence, the above references to case capacity.

    Using non-magnum primers with a particular load may yield best accuracy and/or lowest standard deviation for MV during load development. But, it could also prove unreliable in extreme cold depending on a number of factors.

    If you deviate from conventions and standard practices, it doesn't make it wrong. But, you also don't want to overlook subtle issues that could be problematic.

    -- richard