I really like WSF for 9mm, my go to powder for that cal.
My USPSA load is 4.5gr WSF with a 124gr RMR MPR @ 1.08
WSF is good stuff IMO
Very mixed range brass, S+B SP, charges as thrown after setting measure
5" 9mm 1911
String: 5
Date: 9/17/2017
Time: 11:24:26 AM
Grains: 124
Hi Vel: 1037
Low Vel: 1012
Ave Vel: 1021
Ext Spread: 25
Std Dev: 9
RMR MPR JHP 4.5 WSF 1.08
Velocity Power Factor Ft/Lbs
1021 126.604 286.995
1018 126.232 285.311
1012 125.488 281.958
1020 126.48 286.433
1037 128.588 296.061
Note shorter OAL than above 1.065 for those who have to load the MPR short
String: 6
Date: 9/17/2017
Time: 11:30:58 AM
Grains: 124
Hi Vel: 1067
Low Vel: 1005
Ave Vel: 1041
Ext Spread: 62
Std Dev: 24
RMR MPR JHP 4.6 WSF 1.065
Velocity Power Factor Ft/Lbs
1034 128.216 294.35
1005 124.62 278.071 (this one messed up ES and SD....)
1043 129.332 299.497
1059 131.316 308.756
1067 132.308 313.438
String: 7
Date: 9/17/2017
Time: 11:32:12 AM
Grains: 124
Hi Vel: 1122
Low Vel: 1092
Ave Vel: 1106
Ext Spread: 30
Std Dev: 12
RMR MPR JHP 4.8 WSF 1.065
Velocity Power Factor Ft/Lbs
1095 135.78 330.105
1114 138.136 341.66
1122 139.128 346.584
1108 137.392 337.989
1092 135.408 328.298
String: 8
Date: 9/17/2017
Time: 11:33:50 AM
Grains: 124
Hi Vel: 1157
Low Vel: 1121
Ave Vel: 1139
Ext Spread: 36
Std Dev: 15
RMR MPR JHP 5.0 WSF 1.065
Velocity Power Factor Ft/Lbs
1153 142.972 366.001
1132 140.368 352.79
1157 143.468 368.545
1135 140.74 354.662
1121 139.004 345.967
RMR 124 Matchwinner
String: 2
Date: 7/23/2017
Time: 9:55:47 AM
Grains: 124
Hi Vel: 1038
Low Vel: 1007
Ave Vel: 1026
Ext Spread: 31
Std Dev: 12
RMR 124 Fn FMJ 4.3 WSF 1.09 OAL
Velocity Power Factor Ft/Lbs
1031 127.844 292.645
1031 127.844 292.645
1007 124.868 279.179
1035 128.34 294.92
1038 128.712 296.632
1015 125.86 283.632
String: 2
Date: 10/29/2017
Time: 9:08:18 AM
Grains: 124
Hi Vel: 1137
Low Vel: 1113
Ave Vel: 1125
Ext Spread: 24
Std Dev: 9
RMR 124 FN-FMJ 4.9 WSF 1.08 5inch 1911
Velocity Power Factor Ft/Lbs
1137 140.988 355.913
1117 138.508 343.502
1113 138.012 341.047
1130 140.12 351.544
1128 139.872 350.301
Don't own a .40 but I would think it would work well there also.
Winchester Pistol data for .40
Older Alliant data for Green Dot here
https://www.thehighroad.org/index.php?resources/2004-alliant-load-data.18/