7mag primer.

Discussion in 'Long Range Hunting & Shooting' started by Fan of the 1911, May 15, 2013.

  1. Fan of the 1911

    Fan of the 1911 Active Member

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    I've been working up some loads for my new to me Sendero 7mag. I noticed the lee manual has a large rifle primer listed, and the other manuals and Hodgon on line has it listed magnum. I'm wondering if it matters much? Do you use magnum primers, or not? gun)
     
  2. MudRunner2005

    MudRunner2005 Well-Known Member

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    You are supposed to use magnum rifle primers. I use Federal 215 or 215M (Match) primers.
     

  3. Fan of the 1911

    Fan of the 1911 Active Member

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    I'm using magnum primers now but my supply is down to 125 or so.
    I was caught off guard by both the purchase of the 7 mag, and the shortage of reloading components. I think I have 20,000 long rifle primers.
    I may have to try to find magnum primers.
    The last couple of gun shows I have been to I've not run across federal primers of any kind in quite some time.
     
  4. MudRunner2005

    MudRunner2005 Well-Known Member

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    Funny thing is, around here Large Rifle (mainly for .308 reloading) became scarce so I stocked up. Now Magnums are hard as hell to find....

    I wish these idiot hoarders would move on to shotguns.....I could care less about a shortage for anything related to them. LOL
     
  5. aroshtr

    aroshtr Well-Known Member

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    You may be surprised, but with many loads you will get tighter groups and lower ES with standard (fed 210) vs. Magnum (fed 215). I have seen this in several 7 Mags using Retumbo, and H4831sc.

    Joel
     
  6. roninflag

    roninflag Well-Known Member

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    PM sent.
     
  7. Fan of the 1911

    Fan of the 1911 Active Member

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    Thanks for the info. The main problem I have is most of my primers are Winchester, I do have a new box of remington, but I was going to try to use the winchesters first as they are about 5 years or so old. I have a guy here at work that's going to trade me 500 long rifle for 500 magnum but I think they are Winchester also. That will get me thru load development. I might get lucky and find some before I finish up.
     
  8. str8shoot

    str8shoot Well-Known Member

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    I have found the Win WLR primers to be the best in two 7mags. The WLRs are a little hotter than the 210s but not as hot as the 215s. Velocity is much more consistent with the WLRs over the 215s in my rifles.
     
  9. roninflag

    roninflag Well-Known Member

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    I have found WLRMs good in several 7mm mag also
     
  10. Fan of the 1911

    Fan of the 1911 Active Member

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    That's awesome, I'm going to try to do better in the future. As far as keeping supplies on hand. I've gone to marking my powder with the date. Not that I have a bunch of it. I try to keep a pound I'm loading out of and a pound ahead. I had been going to the gun shows in the past and just picking up a box of 1000 of this or that.
    I have ended up with enough magnum pistol primers to do me the rest of my life most likely. Almost no small rifle, or pistol primers.

    I have cleaned up and moved my reloading to make it easy to tinker with and have organized things greatly now when components become available I will at least know what I need and more importantly if I do have it, where its at.
    Thanks all, William.