Per Hodgdon website, you can load up to 8.2grs HS-6 but it still takes a backseat to the velocities you can get with Accurate AA5. Using a 1911 test firearm, Speer 230 Gold Dots, 8.7grs AA5 gets you 929'ps at OAL 1.265. I'll tell ya this, with a 45 ACP, you don't need top velocities. You need...