standard primers in 7mm mag cases?

Discussion in 'Reloading' started by shawnb, Jan 10, 2012.

  1. shawnb

    shawnb Well-Known Member

    Messages:
    232
    Joined:
    Jun 27, 2010
    just wondering what people think about using standard primers in 7mm wsm/rem mag type cases. advantages disadvantages? personal experience?
     
  2. backwoods83

    backwoods83 Well-Known Member

    Messages:
    2,206
    Joined:
    Jan 8, 2011
    I use CCI BR2s and fed 210Ms in a lot of magnum cases, usually do not use magnum primers unless I'm using 85+ grns of H1000 or colder powders, it typically keeps the extreme spreads down.
     

  3. 7stw

    7stw Well-Known Member

    Messages:
    1,323
    Joined:
    Jan 21, 2010
    Shawnb, I have been using standard primers in my 7mag for some time now. There are so many " guidelines" that say use this here, use that there, blah, blah, you get the picture. Sometimes the type of powder indicates use or non use of a mag primer, regardless od volume. A " seven" holds about 70 grains charge plus or minus. That is not a heavy charge. I am using H1000 and am using Winchester WLR primers. They are standard, but they are the HOTTEST standard primer out there. In some cases, the ES is lower when STD primers are used. My particular rifle shoots like a dream with these. They are hot enough, but not too hot. Every rifle has is own personality, and primer choice falls into that category. Hope this helps. AIM SMALL,MISS SMALLlightbulbgun) 7STW
     
  4. shawnb

    shawnb Well-Known Member

    Messages:
    232
    Joined:
    Jun 27, 2010
    Thanks guys. Ya i was just kinda wondering because you could use a mag primer for a 70 gr charge and then use that same primer for a charge of 110 gr in a bigger case. So it just seems like a std primer should work fine to me.
     
  5. shawnb

    shawnb Well-Known Member

    Messages:
    232
    Joined:
    Jun 27, 2010
    Thanks guys. Ya i was just kinda wondering because you could use a mag primer for a 70 gr charge and then use that same primer for a charge of 110 gr in a bigger case. So it just seems like a std primer should work fine to me.
     
  6. ilscungilli

    ilscungilli Well-Known Member

    Messages:
    341
    Joined:
    Dec 1, 2005
    I got better ES/SD with my 7mm Rem Mag loads using standard primers. I have settled on the Rem9.5 for my 65 gr RL-22 loads (Norma cases), 160 gr Accubonds. Load some up and see what you get, in my case there was a slight drop in speed for the standard vs. magnum, but the accuracy was better with the standard primers.