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Can u reload 5.56 bullet in 223 brass?

Discussion in 'Ammunition & Reloading' started by gunandammohunting, Jul 29, 2015.

  1. gunandammohunting

    gunandammohunting Willsonville Member

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    I can't seem to find an answer on this. I know the differences but I'm wondering if I could load a 5.56 bullet in 223 brass and if it takes anything special. Thanks
     
  2. DieselScout

    DieselScout S Clackamas County Well-Known Member

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    5.56 NATO and .223 Remington use the same bullet, the difference between the two is case design.
     
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  3. gunandammohunting

    gunandammohunting Willsonville Member

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    Ok thought bullet diameter is 224 so wasn't sure if it works.
     
  4. DieselScout

    DieselScout S Clackamas County Well-Known Member

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    Yes both the 5.56 and the 223 use .224 inch diameter bullets.
     
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  5. gunandammohunting

    gunandammohunting Willsonville Member

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    I completely missed that thanks guys.
     
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  6. Darkker

    Darkker Mesa, Wa Active Member

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    The case design is not different, the chamber spec are different. The difference in bullets is whether you use the Merrican method of description or the NATO metric system.
     
  7. noylj

    noylj high desert Active Member

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    Probably not adding any thing but:
    Bullets and cases the same.
    Bullet diameter: jacketed 0.222-0.225" can be used, but 0.224" is normal and recommended. Assuming you won't be using cast lead bullets.
    Any loading manual will show the same bullets for both.
    Are you thinking about reloading? You will not find any 0.224" bullets labeled either .223 or 5.56, as they are used for other cartridges also.
     
  8. Dyjital

    Dyjital Albany, Ore Flavorite Member Bronze Supporter

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    I'll gladly take all of your 5.56 brass since you can't reload them with .223/.224 specs.

    :D:D:D:D:D:eek::eek::eek::eek::eek::eek::eek:o_Oo_Oo_Oo_Oo_Oo_Oo_O
     
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  9. orygun

    orygun West Linn Bronze Supporter Bronze Supporter

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    To gunsandammohunting, buy yourself a few good relaoding manuals, starting with the Lyman manual. They will help you figure this kind of stuff out.
     
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  10. oli700

    oli700 Rogue Valley Well-Known Member

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    the chamber in a 556 has more freebore length and leade before the rifling starts VS 223 Rem to cope with the higher pressure of 556 NATO ammunition.
     
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  11. Darkker

    Darkker Mesa, Wa Active Member

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    Oh Lord.... Now look what you did....
    Let me fix that for you: the throat, or leads, is what is different between the two.

    Ta-da!!
    The pressures are different, on paper, in this country only!
    The minute the military started buying the mouse gun they found the original performance numbers were a lie. At that time Remington had already began the SAAMI submission paperwork. Which isn't surprising given their track record, Remington can screw-up a wet dream...
    In any case only in this country, did the original military military pressure get clung to like a fat kid holding a Snickers.

    The rest of the world who adheres to CIP standards, which are more stringent than SAAMI, raised the 223 pressures to the very same as the 5.56 NATO. Because they understand they are the same cartridge. The chamber specs do differ, and SAAMI says the pressures are different; but the chamber specs are not different due to pressures. That is due to the use of sabot loading and military ordnance.
     
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  12. oli700

    oli700 Rogue Valley Well-Known Member

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    well thanks......don't need corrected though as what I said is fact......I used to make barrels.
    Dont know or care about the rest of the world but 556 nato has more pressure than 223 rem.
    They took the 223 rem and opened up the throat/freebore/leade , whatever you like to call the area after the shoulder and before the lands , to cope with the higher pressure the 556 was producing. Its the reason they say don't make a habit of shooting 556 in a 223 chamber . 223 in a 556 is fine but accuracy suffers
     
  13. DirectDrive

    DirectDrive Vancouver, WA Member

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    True dat.
    Plenty of ejection issues all over the Interwebz due to low pressure .223 ammo in ARs set up for normal, high pressure 5.56 rounds.

    Good answer.

    In many countries around the world it is illegal for a civilian to buy/own military ammo.
    So no 5.56 for them.....only .223 and they can jazz it any way they see fit as long as the headstamp says .223.
     
  14. Certaindeaf

    Certaindeaf SE Portland Well-Known Member

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    .308 Win. is loaded to higher pressure than 7.62 NATO. yay! lol
     
  15. rick benjamin

    rick benjamin USA, Or, Damascus Secure the drama Silver Supporter 2016 Volunteer

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    I like Posts 2, 4, 9, 10.

    Saami .223" chambers are like NATO 5.56 mm chambers EXCEPT
    5.56 mm chamber neck length (Leade, Throat) is longer than .223"

    If a .223" chamber receives a cartridge with a longer neck,
    the chamber neck wall squeezes the cartridge neck wall against the bullet.
    "the crimp gets crimped"
    "Vase neck is between a Rock and a hard place"

    When ignited, powder gasses expand,
    but the bullet can't move down the barrel.
    Something has to give, Kaboom.
     
  16. Darkker

    Darkker Mesa, Wa Active Member

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    "They" didn't lengthen the throat due to pressures, they did it due to increasing bullet lengths(tracers, sabots, etc). "They" just kept signing exemption orders that allowed the pressure increases.
    And whether or not you care about the rest of the world everywhere else shoots NATO pressure in there 223 Remington's.

    http://www.thegunzone.com/556dw.html
     
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  17. Velzey

    Velzey Estacada, Oregon Gunsmith Gunsmith Bronze Vendor Bronze Supporter

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    Yes, and nothing special!

    I would recommend this manual! It has everything in it you will most likely ever want to know about reloading!

    sierra.jpg
     
  18. Certaindeaf

    Certaindeaf SE Portland Well-Known Member

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  19. FA9

    FA9 Hillsburrito, ORgun Well-Known Member

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    What about 223 Wylde?
     
  20. Certaindeaf

    Certaindeaf SE Portland Well-Known Member

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    Don't make me go all .221 Fireball.