I use Power Pistol exclusively in 9mm for all bullet weights. It is an excellent powder. Data depends on what you intend the load for. For a 124gr HP I have used data worked up by the YouTube channel Johnny’s Reloading Bench. I worked up loads with his data using case head measurements to detect a max loading. I can tell you his data falls in line with early Alliant manuals, but is over max in current manuals from the company. I have chronographed my 124gr load at 1220fps without any pressure issues. The load is for small game up to coyote and (some)woods carry. That said, always work up to max in your gun(I highly recommend the case head measurements). I was using Speer Gold Dot bullets. While all 124 grain bullets weigh basically the same, different bullet mfg and styles will vary in length and bearing surfaces, and this does affect pressure. Power Pistol (imo) is the best powder for most(not all) acp pistol cartridges. The downside is it is loud and not flash supressed. It was originally designated BE-84. For flash suppressed performance BE-86 would be the powder you want. It’s the same base powder as PP but a tad slower and it is flash suppressed. Both powders were created off of Bullseye and modified for specific performance attributes. Data will be different from PP. Hopefully this helps a bit, The 9mm is very versatile and there is data for many powder/bullet combinations available.
Regards
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