CCI Primer Issue

Discussion in 'The Ammo & Reloading Forum' started by Freebore, Jan 6, 2012.

  1. Dan Newberry

    Dan Newberry New Member

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    maybe they got some pistol primers in the box... they are softer shelled than rifle primers, and could be a problem in a rifle.

    I don't use CCI pistol primers, so I don't know what color they are... I've heard red or light red (?)

    Anyway, the rifle primers would have yellow compound.

    What you see there seems like a classic issue of pistol primer in a rifle cartridge...

    Dan
  2. Popgunner

    Popgunner New Member

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    I see some cratering on the firing pin indent-not always pressure, usualy is a pin that's a little loose. If it was pressure overcoming the cup I would expect to see the cup filling out the beveled area but it's not on Freebore's examples. With an enlarged pocket you'd expect the leaking you're getting but not primers piercing & not where they are piercing. Weak cup material?
  3. azleite

    azleite Member

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    Just curious, why are you using magnum primers?
  4. al45lc

    al45lc Active Member

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    I've used tens of thousands of CCI primers, never had a problem not directly related to my own error.
  5. Freebore

    Freebore New Member

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    The load is a compressed load (powder fills almost up to the case mouth, seating the bullet compresses the powder very tight in the case), but it is not a maximum load. I have pretty much always used mag primers for compressed loads, slow burning, and ball/spherical powder loads. I've found that using mag primers under these conditions has given me very dependable ignition and good accuracy.

    I'm sure a standard primer would perform well also, but this is a load I've used with a lot of success in other .223's (w/24" barrels).

    When I initially seated the CCI primers I did notice they were somewhat harder to seat, since then I have primed the same cases with Winchester primers and the seating pressure is what I would call normal. I've shot my fair share of CCI primers with no problems, this older batch for some reason was different.
  6. Twicepop

    Twicepop Well-Known Member

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    Freebore...a friend of mine had a similar problem with his .223 ,also using Winchester brass. Your load as stated is not "max", Winchester has less internal capacity than other brands of brass. I would start the process of elimination by trying this load in some other manufacturers brass, with the bullet, powder, and primer selection the same.

    those who beat their guns into plowshares, will plow for thoses who didn't
  7. 243winxb

    243winxb New Member

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    Hodgdon lists maximum at 25.7gr. Defective primer or gas leakage causing primer failure. Reduce the load, retest. :)
  8. redwing carson

    redwing carson Former Guest

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    This can be caused by brass that is too under sized to the chamber. The primer moves rear ward from the pocket and is reseated during the firing cycle. A heavy load can allow gas to escape thru flash hole burning the primer . primer pocket and bolt face. If you are using an SB Die I would try a standard sizer. Make sure all lube is cleaned from the case and the chamber. Also recheck the rifles head space.:)
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