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Old 03-23-2013, 16:19   #1
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Join Date: Jul 2010
Location: Columbus, OH
Posts: 405
question on 5.56 and .223

From the info I have Googled, 5.56 and .223 are virtually the same size, but 5.56 usually has higher pressure. Is that correct?

With that in mind, what parts really matter when it comes to higher presser. Certainly the barrel needs to be rated for higher pressure. What are parts should I be concerned about?

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