Can i mix 223 and 556 in the same mags?

This is a discussion on Can i mix 223 and 556 in the same mags? within the Defensive Rifles & Shotgun Discussion forums, part of the Related Topics category; Originally Posted by AlDente67 Can i mix 223 556 same mags Either one mag of one and another of the other? Or mixed in the ...

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Thread: Can i mix 223 and 556 in the same mags?

  1. #16
    Distinguished Member Array DontTreadOnI's Avatar
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    Quote Originally Posted by AlDente67 View Post
    Can i mix 223 556 same mags

    Either one mag of one and another of the other? Or mixed in the same mag?

    Have a rifle cambered for both.

    Sorry for the dumb question.
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  3. #17
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    Quote Originally Posted by AlDente67 View Post
    Because I have a pile of both on hand...223 brass and 5.56 brass, and just a few mags from magpul that are marked for both designations. The rifle is stamped 556/223 on the barrel.
    The mag should make no difference. Either is okay in your barrrel. no/gun or mag stops to think about what round is next as it shoves one in the chamber. Nothing has to be reset for something different.
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  4. #18
    Member Array AlDente67's Avatar
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    Quote Originally Posted by tubadude View Post
    You'd better send me the 5.56 just to be on the safe side.

    Will do. Meet me in Delaware. :)

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    Member Array AlDente67's Avatar
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    Quote Originally Posted by OldVet View Post
    The mag should make no difference. Either is okay in your barrrel. no/gun or mag stops to think about what round is next as it shoves one in the chamber. Nothing has to be reset for something different.

    Just wanted to make sure before I blow myself up.

  6. #20
    Senior Member Array Ring's Avatar
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    Quote Originally Posted by MJK View Post
    Chambered for both? It must be 5.56x45 NATO or .223 Wylde. If you have a standard .223 chamber do not fire 5.56x45 from it. This would result in excessive and dangerous chamber pressure.
    Not so much.....

  7. #21
    VIP Member Array gottabkiddin's Avatar
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    Long as you're shooting a .556. If your weapon is a .223 then no, it's .223 only.
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    "OldVET" said it best!!!!
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  9. #23
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    Yes, you can. But my OCD won't allow it.
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  10. #24
    VIP Member Array Smitty901's Avatar
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    When you shoot .223 55 gr in 16 inch 1 in 7 barrel accuracy will suffer a little groups will not be as tight. It improves some if you zero for that round.
    The 16 inch 1 in 7 is built for the 5.56 62 gr round. ( I'm not getting into custom loads)
    Now before anyone goes nuts that does not mean you can't shoot either effectively.
    Just stating a few simple facts.
    You are new to the AR if you want to shoot your best with it learn the proper way to zero and proper sight picture for close range shooting.
    Most do not fully under stand it.
    Last edited by Smitty901; May 20th, 2013 at 11:20 PM.

  11. #25
    Member Array Boudin's Avatar
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    As others have said, a 556 chamber will eat up .223 but not the other way around.
    If your weapon is chambered for 556 feel free to mix n match

  12. #26
    VIP Member Array Kilowatt3's Avatar
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    Quote Originally Posted by MJK View Post
    Chambered for both? It must be 5.56x45 NATO or .223 Wylde. If you have a standard .223 chamber do not fire 5.56x45 from it. This would result in excessive and dangerous chamber pressure.
    Quote Originally Posted by Ring View Post
    Not so much.....
    It would be more accurate to say "...might result in excessive and dangerous chamber pressure." Lots of people do it, but it is not a good idea. It's a more serious issue with bolt-action guns than with AR-pattern rifles. Ring's "Not so much" comment is ill-informed.

    Like most rules, though, this one has an exception; Ruger Mini-14's (except the Target model) are stamped ".223", but are actually chambered for 5.56 and are safe with it, per Ruger.
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  13. #27
    VIP Member Array Smitty901's Avatar
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    Quote Originally Posted by Kilowatt3 View Post
    It would be more accurate to say "...might result in excessive and dangerous chamber pressure." Lots of people do it, but it is not a good idea. It's a more serious issue with bolt-action guns than with AR-pattern rifles. Ring's "Not so much" comment is ill-informed.

    Like most rules, though, this one has an exception; Ruger Mini-14's (except the Target model) are stamped ".223", but are actually chambered for 5.56 and are safe with it, per Ruger.
    For some reason Bushmaster marketed and still does an AR stamped .223 on the lower but has a true 5.56 barrel. It is one of there very low-end ones.

  14. #28
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  15. #29
    VIP Member Array Kilowatt3's Avatar
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    Quote Originally Posted by Smitty901 View Post
    For some reason Bushmaster marketed and still does an AR stamped .223 on the lower but has a true 5.56 barrel. It is one of there very low-end ones.
    What's stamped on the lower doesn't matter - it's what's stamped on the barrel!
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  16. #30
    Member Array sammage's Avatar
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    Quote Originally Posted by Kilowatt3 View Post
    What's stamped on the lower doesn't matter - it's what's stamped on the barrel!
    And some companies even lie about that.

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