AA #5 is a good selection for progressive press rookies as you employ much more powder so a double demand will (generally) be noticeable. I like AA #5 but N320 was much more precise. Clays burns clean up but some powder measures struggle with flake powders like this. WW 231 https://45-caliber-bullets21852.topbloghub.com/29457781/top-45-colt-bullets-secrets