Ammo Cross refference

Discussion in 'The Ammo & Reloading Forum' started by bizy, May 31, 2009.

  1. bizy

    bizy New Member

    Dec 17, 2008
    Marlow, Ok
    7.62 X 51 is the same as a .308 round.
    Is there any other ammo that is the same but labeled different?

    Sorry about all the one sentence questions. Seems like every post I read, I find things I don't know...
    Thank for your patience..
  2. Lotsdragon

    Lotsdragon New Member

    Apr 5, 2009
    Potosi, Mo
    .223=5.56 comes to mind off hand.................

  3. BobMcG

    BobMcG Well-Known Member Supporting Member

    The same? Practically, yes, technically no with operating pressures being different. One example being 7.62x51mm NATO brass tends to be thicker than .308 Win. brass reducing interior space. Do a search, it's a topic that gets covered then and again.

    The same can be applied to the 5.56x45mm NATO vs. .223 Rem.

    Others that go by more than one would include:

    .30 Army / .30-40 Krag / Caliber .30 (1892)
    .30-06 Springfield / .30 Gov. / 7.62x63mm Caliber .30 M06
    7mm Mauser / 7x57mm
    8mm Mauser / 7.92mm Mauser / 8x57mm
    280 Rem. / 7mm Express Rem.
    250 Savage / 250-3000

    The list can go on and on and on....
  4. Alpo

    Alpo Well-Known Member

    Feb 3, 2007
    NW Florida
  5. bizy

    bizy New Member

    Dec 17, 2008
    Marlow, Ok
    Ya, I probably did.. Sorry. My mind works some time. Some time it doesn't. I ask my wife things sometimes only 15 minutes apart..
  6. knothead

    knothead New Member

    Jul 21, 2008
    south il
    this is not true. 223 and 5.56 are technically not interchangeable. It is NOT recommended that you shoot 5.56 nato spec ammo in a 223 chambered firearm. the nra magazine had a good article on the differences a while back. I read about this several years ago and have rarely seen this info printed in the mainstream magazines. I have also seen the same statements made about the 308 & 7.62 but not in a reputable source like american rifleman. My armalite is chambered 5.56 and is marked as such. if you have ever seen a reference to the 223 wylde chamber it is sort of mix between 223 and 5.56. 223 in 5.56-good 5.56 in 223 - bad
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