Webmar 29, 2023 · unique is a fairly forgiving powder in most things, but the 9mm case's relatively small volume is not as forgiving. In my old books i show 6. 1, or 6. 2gr unique. Webcompare different powders for 9 mm pistol loading, including alliant unique, power pistol, and more. See load data, shot groupings, video, and performance summary for each. Webmay 17, 2020 · i've been handloading 9mm 124gr with 5. 7gr unique for decades. I've shot tens of thousands of rounds and taken several classes with this…