Small Rifle Magnum primers in 223

Discussion in 'Reloading' started by Iron Worker, May 11, 2009.

  1. Iron Worker

    Iron Worker Well-Known Member

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    Checking on my supply of primers. I found a 10 + year old box of CCI 450 Small magnum rifle primers.( 1,000 primers) I guess all I can do is try them. Any predictions on using these primers in my AR-15 223 ?
     

  2. Dano1

    Dano1 Well-Known Member

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    I have some old CCI 200 LR primers that are quit old as well. They are in the White/green/black packages with the black trays. They shoot just fine. I haven't had a miss fire yet.

    I'm guessing that as long as they have been kept dry and in a relatively cool place, 40-60 degrees, they should work just fine.

    Dan
     

  3. anachronism

    anachronism Well-Known Member

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    Use 'em with ball powder, they'll be fine. I remember buying some Federal magnum small rifle primers during the last primer famine. I ended up using them in a .357 magnum! Times were tough back then. I used to have to walk ten miles to shoot, in a snowstorm, barefoot....
     
  4. Predatormaster

    Predatormaster Active Member

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    I had read that if you use magnum primers in place of a regular primer you need to reduce your loads. Anyone elses thoughts?
     
  5. BountyHunter

    BountyHunter Writers Guild

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    In the BR cartridges we are using the 450s and it cut ES and SD by over 50%.

    They are to go to primers for the BRs.

    BH
     
  6. Natty Bumpo

    Natty Bumpo Well-Known Member

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    I know the Speer manual generally recommends magnum primers with ball powder. I tried a ball powder load with both CCI 400 and CCI 450 primers in my .223 Rem bolt gun. I didn't see any difference in grouping at 100 yards. They both shot about the same. This was before I got my chronograph, so I can't say anything regarding velocity.
     
  7. MachV

    MachV Well-Known Member

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    I use a lot of 2200 powder in the 223s and the 450 primer HAS to be used. a 400 primer will open groups up to shotgun patterns...or worse!
    If they still go bang they will work great with most ball powders.