Never did comparison testing with 223, but I did with the yellow and nickel plated stuff using Fed Gold Medal 308. With moderate loads, I started getting neck splits sooner with the nickel plate and discarded yellow after 13 reloads and nickel after 11. I never had any issues with flaking, scratched dies, etc as some reported.
If you FL size, the fireform rationale does not really come into play. I personally have not noticed any significant downrange performance difference between FL and NS reloads. Granted, NS requires less case prep and may also extend case life a bit.
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Old Guys Rule
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