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Primer Question

Discussion in 'Handloading and Reloading' started by clancy12, Jul 17, 2011.

  1. clancy12

    clancy12 New Member

    Dec 22, 2010
    I've got a box of Fed 215 primers, but one load I was looking at called for WLRM and another for Rem 9 1/2M. If I put Fed 215 primers in instead, do I have to alter the powder loads or won't it change the pressure much? Thanks.
  2. rfwobbly

    rfwobbly Senior Member

    Nov 14, 2008
    Cornelia, GA
    By my information, all 3 should be equivalent Large Rifle Magnum Primers.
  3. 243winxb

    243winxb Mentor

    Jul 7, 2004
    Hopewell Big Woods
    Use the suggested starting load of powder and work up as always. If you already have a maximum load your using, reduce the powder charge when changing any component.
  4. gamestalker

    gamestalker member

    Sep 10, 2008
    SW Arizona
    My experience has indicated that powders that list a magnum primer being used have not function very well and actually produced signs of higher pressures. A magnum apllication that lists a magnum primer and is substituted with a standard LRP can produce unpredictable pressure spikes not to mention a host of other undesirable performance.
    I loaded some 7mm rem. mag using RL22 and substituted LRP for LRMP during the big shortage a while back and was really shocked at the results. Not only did I get a good amount of unburned and stiull burning powder blown back into my face, extreme variances though the chrony, but I also experienced some very flat primers, and I do mean flat, as in they filled the entire pocket to the edges. Extraction was quite stiff as well, which was enough for me to never substitute a SAMMI recomended primer application ever again regardless of ow many stories I hear about primer type's not being important enough to worry about. Maybe a primer can be substituted when using light to mid range powders, I don't know, but I'm convinced it's not a direction I'll ever explore again.

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