5.56 mm NATO versus .223 Remington

load1up said:
I was looking at my colt sporter a2 hbar the other day and on the side of the receiver is .223 yet on the hbar it has 5.56 and the twist rate on it. Does this mean i could use 5.56 or .223 because i don't want to use it if it is a .223 ?
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:bangHead:Just sell it. With both markings on the gun it is bound to blow up with either.:runaway:

So all you ammo gods out there that like to spout Sammy this and Sammy that. What the hell are you supposed to do if your newly manufactured .223 rem. ammo comes complete with 5.56 Nato brass? How about bullet? The powder? If the base has a NATO crossed circle, and it came in a commercially produced box is it 5.56 or .223??? Confused? You shouldn't be because......



It's the same f@#king ammo!!!
I'll let myself out now:wave:;)
 
Christ, don't yell and scream, some people are trying to learn something. Not all of us were born with all the info right out of the va j j...... like some......and besides I poop easily.
 
Used to be a guy could mix and match 556/223 with nary a problem before the internet came along....

Its like 87 octane gasoline from Esso and 87 octane gasoline from Chevron

Same as 308 winchester and 7.62 (nato)
 
jennis said:
Used to be a guy could mix and match 556/223 with nary a problem before the internet came along....

Its like 87 octane gasoline from Esso and 87 octane gasoline from Chevron

Same as 308 winchester and 7.62 (nato)
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PRECISELY ! It only becomes significant if you reload.
 
jennis said:
'case capacity differs'
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Again, exactly, milsurp brass is ever-so-slightly thicker than the commercial stuff, which results in (slightly) different variables when it comes to case capacity and it's result on overall pressure. Heck I've never reloaded in my life but know that when I start doing so I'll have to start sorting cases, and it scares me in the sense that I have no idea (not to say no effing clue) how to start or how to do so :runaway:.
 
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