Stupid gun question

RUGER

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Ok I will admit it, I am dumb, in case nobody knew it.


What is the difference in a .223 and a 5.56 and are they ALWAYS interchangable and if not, why?
 

EastTNHunter

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A .223 can be fired in a 5.56, but not the opposite. The .223 is the commercial version of the military 5.56, and SAAMI specs on the .223 are milder than the 5.56.
 

infoman jr.

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EastTNHunter said:
A .223 can be fired in a 5.56, but not the opposite. The .223 is the commercial version of the military 5.56, and SAAMI specs on the .223 are milder than the 5.56.
This is correct. A .223 Wylde chamber will also handle both.
 

Wildcat

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EastTNHunter said:
A .223 can be fired in a 5.56, but not the opposite. The .223 is the commercial version of the military 5.56, and SAAMI specs on the .223 are milder than the 5.56.

He's right. The 5,56 is hotter.

You can fire both from a gun marked 5.56 but you can only fire 223 from a gun marked 223.
 

rdl65

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Back before I learned you weren't supposed to, I fired a lot of military 5.56 through a Remington 700 marked for 223. as far as I know it didn't hurt a thing.
 
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