Colorado Shooter Instruction - 223 -vs- 5.56 Ammunition There are some differences you'll notice right off the bat between .223 Remington and 5.56 NATO Ammunition: On the case rim, you'll notice “223”
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Brass 223 Rem/5.56, Crack Checked, Cleaned and Polished, Primer Pocket Reamed, Mixed Head Stamps, Not Sized or Trimmed - 1000 Pieces
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