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federal Mag. primers 1 thousands biger than CCI

Discussion in 'The Ammo & Reloading Forum' started by billr, Mar 29, 2005.

  1. billr

    billr New Member

    Joined:
    Oct 15, 2004
    Messages:
    44
    Location:
    oregon
    Could not get Federal Magnum primers to go with out pushing very hard , bought some CCI they fit easy they are one thousands different I am usung GI brass in a 223 with great results untill this has come up, the CCI resolved the problem .
  2. HI-5-O

    HI-5-O New Member

    Joined:
    Dec 19, 2004
    Messages:
    34
    Interesting to note that. I've only used CCI and now Winchester primers in my Lee Progressive press. Lee's instructions warns you to not use Federal primers in their presses. Now I know why.

    Mahalo!
    KN
  3. inplanotx

    inplanotx New Member

    Joined:
    Jan 28, 2002
    Messages:
    8,889
    Location:
    Texas
    Well, several questions here.

    1) Are the primer pockets swaged since it is military brass?

    2) What load are you using?

    3) WHY magnum primers in such a small case?

    Magnum primers raises pressures in a small case. This can lead to problems.

    I have never had a problem with Federal primers in GI 5.56mm brass as long as the primer pocket is properly swaged!
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