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Substituting magnum primers for regular

Discussion in 'Handloading and Reloading' started by cherryriver, May 8, 2008.

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  1. cherryriver

    cherryriver Member

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    I have a couple of thousand of Winchester small pistol magnum primers I'll be unlikely to ever use.
    I do want to put up a run of .38 Specials and don't need max loads.
    Any direct experience with substituting? Problems?
     
  2. rcmodel

    rcmodel Member in memoriam

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    No.

    Unless you are loading maximum loads with standard primers, and then switch to Magnums, you will probably notice no differance.

    rcmodel
     
  3. Doug b

    Doug b Member

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    Ball powders tend to prefer a mag. prime.
     
  4. hoptob

    hoptob Member

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    Yes. Magnum primers will generate higher pressure. As rcmodel said, you may not see the difference if you are working with low pressure load to start with. However these are all relative terms and if you really want to substitute I recommend starting 2 gr. below standard primer recipe and working your way up. Better safe than sorry.

    :)

    Mike
     
  5. strat81

    strat81 Member

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    The OP mentioned .38 Special loads. 2 grains below might be a squib load.
     
  6. hoptob

    hoptob Member

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    Good point, Strat, I did not think about it. Substitution really depends on the desired load.

    BTW, why not to choose powder meant to be used with WSPM's? E.g. HS-6 or such.

    Mike
     
  7. btefft

    btefft Member

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    Don't do it. Chamber pressures will be too high.

    Hack
     
  8. socaldan

    socaldan Member

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    You can ship those primers to me...As long as you pay freight too.
    Oh...you might stick a twenty in the box for my trouble !!!
    Ha.......kidding!
     
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