I am always confounded by the endless discussion of the difference between 223 and 5.56. There is none. Specs are the same, one in metric, one in english units. Oh, NATO! My Lyman, Sierra, and Hornady manuals make no mention that military 223 brass should be loaded any differently than commercial. Compare 30'06, where dropping military brass reloads down a grain or two is the wisdom. For what it's worth, I can see a slight difference in capacity between certain 223 commercial brass makers (and I wouldn't be surprised if there are differences lot from lot with the same maker), but I don't ever hear anything about that being cause for concern. Enough already!
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