In the Winchester 14th edition reloading manual, I show:
AA hull, 1 oz, Win 209 primer, 19.5 gr.WST powder,Win WAA12SL wad, 1180 FPS 7,100 psi
It reads "this load duplicates the ballistics of the factory Winchester AA Xtra-lite target load"
The same load w Fed 12SO wad shows 8,000 psi
This would be with the "old style" hull.
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