Glock 23---1 fired Win cases, CCI 500 primers.
Winchester Super Field WSF powder
165 FMJ-FN 1.125" oal
6.0 grains WSF----970 fps
6.3-----------------1010
6.6-----------------1060 fps
I like WSF in 40 S&W and it does seem to have a softer recoil than other powders at the same velocity. I shoot some Rainier 165 plated FN bullets also. A very nice load for targets with WSF is 6.0-6.2 grains with 165 gr. plated or jacketed at around 950-1000 fps. Some PMC Bronze 165 FMJ-FN factory loads run about 950-960 FPS in my G23. Check all data sources. Hodgdon's data for 40 S&W with WSF and 165 gr. bullets is close to my results.