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The guy sold me magnum pistol primers

Discussion in 'Handloading and Reloading' started by SunnySlopes, Jun 14, 2013.

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  1. SunnySlopes

    SunnySlopes Member

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    Can I use them for Unique powder loads?

    The load is 6 grains Unique, 158 grain plated bullets, 357 mag cases.
     
  2. rcmodel

    rcmodel Member in memoriam

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    Yes you can.
    Your load is lower then a starting load in .357.

    But pay more attention next time.

    You can't blame it all on 'The Guy' who sold them too you! :D

    That's like saying 'the guy' at the self-serve gas station sold you diesel fuel instead of unleaded because you didn't read the pump.

    rc
     
  3. gonefishin1

    gonefishin1 Member

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    my manual calls for magnum primers in a 357 mag.
     
  4. Riven_Cole

    Riven_Cole Member

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    i gather from the guys post that that is what he is using. he is asking if they are compatible with a certain powder.
    op: correct me if i am wrong
     
  5. 45lcshooter

    45lcshooter Member

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    357 Mag, can take either a regular primer or a mag primer. With a MAG primer, stay on the the lower end of the load data. Remember to always check your boxes before you walk out the store. The guy behind the counter is only human as well. It takes 2 to make a mistake.

    You will be fine loading them, like before, just stay on the low side of the the data. And yes RC is right, your load is under the "starting charge" data. So you should load and shoot.
     
  6. Bush Pilot

    Bush Pilot Member

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    It pays to check your purchase before leaving the store :rolleyes:
     
  7. rcmodel

    rcmodel Member in memoriam

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    Just because your manual, or the case head-stamp says Magnum, doesn't mean you need to, have to, or should use magnum primers with all powders.

    Magnum primers are necessary for slow ball powders like H-110 or W-296.
    Flake powders like Unique & 2400 usually give lower extreme spreads and better uniformity using standard primers.

    The manual publisher knows that, but instead of saying mag primers with H-110 and standard primers for Unique & 2400, they say mag primers for everything.

    rc
     
  8. Hondo 60
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    Hondo 60 Member

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    ^^^^^^^ What rc said ^^^^^^^^^
     
  9. Reefinmike

    Reefinmike Member

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    Rc nailed it as usual...

    I personally have been using small rifle primers (which im told are similar to SPM in regards to how "hot" they are) the past seven months for 357 mag using H110 and HP38 as well as 45acp, 38spl and 380acp

    Heck, I even have a small primer mystery box with a bunch of random primers ranging from small pistol to small rifle mag from random brass that ive had to decap and toss in the scrap bin. once I get enough ill load em in some low pressure 38spl loads and use em as range fodder!
     
  10. SunnySlopes

    SunnySlopes Member

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    Correct. I'm old school. I remember when magnum primers were recommended for slow burning powders, like 2400. That was the combo I used to use.

    But standard primers were recommended for faster burning powders, like Unique.

    At some point they said it didn't matter. In fact, one company even discontinued magnum vs standard primers, and made one primer for both.

    So I assumed the standard primer was good for both slow and fast burning powders.

    These days I use Unique almost exclusively. I wonder if magnum primers are ok for Unique.

    But they are ok, as in safe for shooter and gun?
     
  11. Hondo 60
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    Hondo 60 Member

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    Sometimes that's not possible.
    I went to Cabela's one time & I was never allowed to see the package up close.
    The guy grabbed it off the shelf, scanned the bar code, put it in a bag & stapled it shut.
    I didn't realize he sold me mags til I got home (75 miles away)

    I suppose I should have demanded to see the pack before he bagged it.
    Which is exactly what I do now.
     
  12. gamestalker

    gamestalker member

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    You blew it, those are going to be worthless for your application, just send them to me and I'll dispose of them for ya. just kidding, you'll be fine as long as you aren't starting at the upper end of the charge table.

    GS
     
  13. 35 Whelen

    35 Whelen Member

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    They'll be fine. I've found in handguns using small primers, magnum primers are fine with any powder, but with the slow burning numbers, you need to use magnum primers. I was looking at an article over loading the .41 Magnum in Handloader the other day. He assembled some loads with Red Dot and used LP's in some and LPM's in others. Virtually no velocity difference at all.

    I've also noticed that MagTech, S&B, Tula and Winchester no longer produce LPM primers anymore.

    35W
     
  14. SunnySlopes

    SunnySlopes Member

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    Yeah, this was at bass pro. They've been having so many primers stolen that they now lock them in the glass pistol display case. They're just thrown in together.
     
  15. KansasSasquatch

    KansasSasquatch Member

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    That must be a policy someone at that particular store came up with. Cabelas here just keeps them behind the gun counter and they hand you the box. They tape the package if you only buy a 100cnt.
     
  16. KansasSasquatch

    KansasSasquatch Member

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    That's a poor practice for the store. Keeping them locked up is alright but having them all jumbled together is just sloppy/lazy.
     
  17. brickeyee

    brickeyee Member

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    Depends on what powder you are using more than the name of the cartridge.
     
  18. FullEffect1911

    FullEffect1911 Member

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    I worked up a 9mm load recently using Federal small magnum pistol primers. Not because that's what I prefer to use, but because that is all I have available to me at this time. I started low and worked up to the power factor I want. They shoot great and the load is accurate. Start low and work up, mag primers will usually add a few extra feet per second.

    I don't think I would want to push the limits on a load using the "wrong" components.

    I wouldn't be overly worried about using mag primers in .357 magnum. Though with unique mag primers aren't necessary.
     
  19. Rule3

    Rule3 Member

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    If you look at Hodgdons data (I know it's not Unique) but if it is a "Magnum" they use magnum primers even for say HP38 or Win 231. I asked them and they said just to be consistent,

    Yes you can use them but a SPM actually has more energy that a SR. At least CCI does.

    http://www.thehighroad.org/showthread.php?t=714713
     
  20. buck460XVR

    buck460XVR Member

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    Lyman's 49th shows the use of SP magnum primers using Unique with a starting load of 6.4 gr. with a 158gr jacketed.
     
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