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#1
12-01-2005, 03:58 PM
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is there any difference in 5.45 x 39 and .223 Remington
I have always assumed they were the same but do not have a gun in that caliber.
Is ther actually a difference or are the one in the same. One Commercial and one NATO names
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I am PETA's #1 Member People Eating Tasty Animals 
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#2
12-01-2005, 06:31 PM
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There are many differences, but the most significant is the fact that the .223 Remington bullet diameter is 5.56 mm and the 5.45 x 39 is 5.45 mm. They are not interchangeable if that's what you are wondering.
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"The American military is like a finely crafted sword. To be effective, it must be wielded by a discerning, skilled and merciless hand."
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#5
12-05-2005, 02:25 PM
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Quote:
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I am PETA's #1 Member People Eating Tasty Animals
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#6
12-05-2005, 04:34 PM
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If I remember correctly, the NATO 5.56 is slightly thicker than the .223 but I don't remember by how much.
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USAF Retired  Far better is it to dare mighty things, to win glorius triumphs, even though checkered by failure... than to rank with those poor spirits who neither enjoy nor suffer much, because they live in a gray twilight that knows not victory nor defeat. Theodore Roosevelt Don't sweat the petty things and don't pet the sweaty things
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#7
12-05-2005, 06:40 PM
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Quote:
__________________
"The American military is like a finely crafted sword. To be effective, it must be wielded by a discerning, skilled and merciless hand."
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#8
12-05-2005, 07:57 PM
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There are very slight differences between the military 5.56 and the .223 Remmy, both in the ammo and in the way guns are chambered.
But they are more or less the same round. You can usually interchange them safely, as far as fit and chamber pressures are concerned. Bullet weight/length versus twist rate may not match, but that's another issue. The 5.45x39 is a WHOLLY different round. External ballistics may be similar, but that's about it.
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Freedom of the Press Does NOT mean the right to lie! Visit me at my Reloading Room webpage! Get signed copies of my Vietnam novels at "Baggy Zero Four" "Mike Five Eight"
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#9
12-06-2005, 05:18 PM
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DaMadan
The major difference is the rifle it self. Check out this site http://www.thegunzone.com/556v223.html
Hope this helps! muledeer
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#10
12-07-2005, 10:10 AM
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Re: DaMadan
Quote:
you can use both ammos (5.56 and .223) in a NATO chambered rifle but not the other way around.
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I am PETA's #1 Member People Eating Tasty Animals
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#11
12-10-2005, 03:23 AM
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The differences are really minor. The Nato round is a bit hotter.
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Mickey Rat Citizen of Alabama NRA Life Member
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