231 has been my "go to" powder for many years in 38,9mm, and 45acp. I just chrono'ed some 9mm loads with 4.5 gr. 231 behind a 124 gr Jacketed HP. From a 3 1/2" barrel it did 821.8 FPS, with 10.92 Extreme Spread, and a Standard Deviation of "3.87"! Any time I can get that kind of consistency I'll continue to stay with it. It may not be quite as clean burning as some others, but the results are worth it.

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H Richard
SWCA1967 SWHF244