HS-6 is my favorite 9mm powder. 6.6gr under a 124gr HST gives me outstanding accuracy and 1160fps, low SDs and single digit ES numbers. I've tested the load 3 times and got very similar numbers, and group sizes, all 3 times. Burns clean(ish) at those levels too. No pressure signs. Just cant ask for any better from my CZ P-01 and this load.