Reloading the New AA® High Strength Hull Winchester has designed the new 12-guage AA high strength hull to reload with the same reloading data as the old AA hull. However, on some reloading machines, even though the components and reloading data are the same, there may need to be a minor adjustment made to the reloading machine to optimaze load fit and appearance.
WINCHESTER AA-HS HULLS 12ga USED 2-3/4" 8 CRIMP *500/BOX By Michael U. on May 22, 2020 . ... They will be my go to hulls in the future for reloading 12ga.