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Accidentally used magnum primers

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  • #1
    dnguyen32
    Junior Member
    • Jan 2012
    • 26

    Accidentally used magnum primers

    I accidentally mixed CCI 500 and 550 in my primer load tray and I made some rounds with them. From what I've been reading, it really shouldn't be a problem unless I'm pushing up against the max load or unless I'm using an especially fast powder.

    I'm working up loads with Ramshot Silhouette (5.7grn, max. 5.9grn) and Winchester AutoComp (5.5grn, max. 5.7grn) behind 115grn plated RN. I have also pushed out the COAL 5/1000ths from the recommended 1.140 and put on a small crimp.

    Should I be worried? Is there anything I should be looking for other than the normal overpressure signs? Thoughts?

    When I switch back to all 500s, should the results for those loads still be valid for performance?
    Tags: None
    • #2
      Divernhunter
      Calguns Addict
      • May 2010
      • 8753
      You will be fine. You will probably not be able to tell the difference. The mag primer loads may have a lower SD over the chrono and be more accurate.

      Do not sweat it.
      A 30cal will reach out and touch them. A 50cal will kick their butt.
      NRA Life Member, NRA certified RSO & Basic Pistol Instructor, Hunter, shooter, reloader
      SCI, Manteca Sportsmen Club, Coalinga Rifle Club, Escalon Sportsmans Club, Waterford Sportsman Club & NAHA Member, Madison Society member

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        • #3
          Carcassonne
          Veteran Member
          • Jul 2012
          • 4897
          Don't worry about it unless you are already over max pressure.


          .
          Be sure to ask your doctor if depression, rectal bleeding, and suicide are right for you.

          In the United States a person's expertise on a subject is inversely proportional to their knowledge of the subject: The less they know about something, the more they become an expert on it.

          I am being held hostage in a giant insane asylum called Earth.

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            • #4
              stilly
              I need a LIFE!!
              • Jul 2009
              • 10685
              Welcome to my first box of 50 9mm loads that I made in 2012...

              They shot fine, ask my friend, he will tell you all 50 went off...
              7 Billion people on the planet. They aint ALL gonna astronauts. Some will get hit by trains...

              Need GOOD SS pins to clean your brass? Try the new and improved model...



              And remember- 99.9% of the lawyers ruin it for the other .1%...

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