Thread: 5.56 vs .223
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Old November 27, 2012, 06:37 PM   #2
JimDandy
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Join Date: August 8, 2012
Posts: 2,454
I dunno about the .308 but you are correct that 5.56 does not go in .223 though .223 can go in 5.56. The reason why is up for debate, though the two I stick with is A)Because SAAMI says so, and B) the best logic I heard was the walls were thicker and created higher pressure, which doesn't necessarily require more powder. But truth be told, I don't know why, other than the experts say it's bad.
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