Or......you could try "old school"
First....run the case into a 223 FL die, WITHOUT the neck expanding button.
Second......very carefully, run the case into a 17-223 bullet seating die(without the seating stem). Multiple short sizing strokes, and slight polishing of the die, helps.
Third......run the case through the standard 17-223 FL die.
Results may vary......depending on age/hardness of brass.
Hope this helps.
Kevin
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