There is too many variables to go willy nilly changing components in a published load.
Both those test show his loads increased by 3300-3500 psi , so I guess that info from Alliant to ad 2500 psi goes right out the window in this case.
In every case that I have had loads tested with Win 209 vs Ched cx2000 primers, the Ched primers have always had more pressure.
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