Primers falling out???

Discussion in 'Reloading' started by ricknolan, Sep 14, 2008.

  1. ricknolan

    ricknolan Well-Known Member

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    25-06AI, Winchester Brass, Winchester Large Rifle Primers and about 1/3 of the primers are loose or fall out after setting them. What is up?

    This brass has been used maybe 3 times and after I size the brass, I clean the pocket and ream the pocket with an RCBS Case Mate then polish. Do I need to stop reaming the pocket or is there another problem?

    Thanks
     
    Last edited: Sep 14, 2008
  2. geargrinder

    geargrinder Well-Known Member

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    I'd say it is time to stop reaming.

    I don't ream, but if I did I'd only do it once per piece of brass.
     

  3. Broz

    Broz Well-Known Member

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    Either the load you are shooting is to hot and stretching the case or you are reaming the primer pocket to much.

    Thats my opinion.

    Jeff
     
  4. JeffVN

    JeffVN Well-Known Member

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    I'm going to agree with the above. Either the load is hot and stretching the brass, or you are reaming too much. I ream my brass once, and leave it alone. If its not cleaned as part of my regualr cleaning regimine then I give it a twist or two with my crocogator or other cleaning tool.

    JeffVN
     
  5. edge

    edge Well-Known Member

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  6. baldhunter

    baldhunter Well-Known Member

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    You might want to mic the OD on the primers.I've noticed the Winchester primers I've used seemed a whole lot looser to seat in the primer pocket than CCI primers.
     
  7. davewilson

    davewilson Well-Known Member

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    the primer pocket reamer that i have only cuts on the bottom of the pocket, but i still only do this once to new brass. after that i clean them each time before tumbling. i also agree with the CCI primers being a tad larger in size, or it feels that way because the cup is actually a little harder.
     
  8. Ridgerunner665

    Ridgerunner665 Well-Known Member

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    It may be either the reaming...or your load is too hot, stretching the pockets.
     
  9. baldhunter

    baldhunter Well-Known Member

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    It could possibly be a combination of the primer pocket in the brass being factory made slightly oversized and the primers being slightly undersized.Just a little in opposite directions equals a lot.You might want to contact Winchester and let them know about your problem.
     
  10. eddybo

    eddybo Well-Known Member

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    I use my primer pocket reamer to clean my primer pockets after every firing. They cut the bottom of the hole not the sides. IMO your over pressure.
     
  11. Bravo 4

    Bravo 4 Well-Known Member

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    I'm with eddybo on this one. I use it to clean mine after every firing and it doesn't effect the diameter of the primer pocket. You are running your load a little on the hot side.
     
  12. kstrick

    kstrick Well-Known Member

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    I agree with all of the above.
    I think to hot a load is the primary reason. I also use the Lee auto prime.
    When re-priming if the primer just goes in way to easy I pitch the brass. I have had primers back all the way out. This really messes thing up when using auto loaders.
    My rule of thumb - if I am in doubt about a case - pitch it!