223/5.56 brass : r/reloading

Any reloading experts:? Think this is a factory brass reloaded to

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Need help understanding the 223/556 on reloading : r/reloading

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Just sized with RCBS 223/5.56 sb die. Is this a flair? I've just

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223 / 5.56 Clean Reloading Rifle Brass, Cleaned and Polished, Mixed Headstamps