All I use in 9MM is Unique powder and 124 grain bullets. My loads range from 5.0-5.4 grains. I load 5.0-5.1 grains with different 124 gr. jacketed RN at 1.50" oal and my top load is Speer 124 Gold Dots at 5.4 grains. I seat 124 gr. Rem Golden Sabers and Speer Gold Dots to 1.120-1.125". Using mostly Win brass and also several other brands it appears 5.0 grains is about at the bottom of the seated bullet or just very slightly compressed. I don't have any issues with overfilled cases at 5.4 either.
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