Here's real data:
This data is for Blue Bullets 147 RN bullets loaded to 1.09 OAL, CCI SPP, 3.25 gns Commercial 5(CSB-5) powder
Gun Avg Velocity (FPS)
Kahr PM9 845
Glock 19 876
SP-01 Shdw 896
Tac Sport 919
Size matters.
For fun, I did it with a 45 load too. Bayou 230 RN, Winchester Primers, OAL 1.235, CSB-5 4.4 gn
DW Heritage 829
S&W 625 836
SAR K2 45 801
I think this powder is medium burn rate for pistol powder. I suspect that barrel length is more important than it would be with a faster powder. I have some Clays, I'll repeat the experiment with that some day.