Thread: 5.56 vs .223
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Old November 27, 2012, 06:55 PM   #3
plouffedaddy
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Join Date: May 13, 2011
Location: Carolina
Posts: 3,279
Quote:
I hoping yall can settle a debate between me and a friend...


I'm sayin that you're not supposed to fire 5.56 in a rifle chambered in .223 but you can fire .223 in one chambered in 5.56. The reason being that the 5.56 has more powder and runs at higher pressures.

Correct. 556 also has different taper/throat dimensions.

He is saying that the 5.56 has a thicker case and therefore should hold less powder.

He's wrong about the thicker case=less powder debate because the dimensions are not the same.

Any clarification?






Thanks in advance



Ike
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