Corn-Picker had a good point, he mentioned the 357sig and 10mm as using the same bullets as their little brothers 9mm and 40 S&W. I am only familiar with the 40 S&W but was always under the impression that the bullets I purchase for my 40 S&W are the same bullets others are using in 10mm. Below I have posted some old chrony data that I did years ago. The velocity gain is nice out of the carbine, ~250fps, but really only brings the 40 S&W up to 10mm velocities, which I would expect to be within the design parameters of defensive bullets.
Using Hodgdon Longshot and 165gr Rainer Plated FP bullet, OAL 1.125, I got the following results, temp was about 90*F.
Charge Avg. ES Std Dev. Firearm
7.1gr 1013 24.8 10.8 PX4, Pistol 4" Barrel
7.1gr 1299 70.8 29.6 CX4, Carbine 16.6" Barrel
7.3gr 1038 34.4 17.5 PX4, Pistol 4" Barrel
7.3gr 1313 51.7 20.8 CX4, Carbine 16.6" Barrel
7.5gr 1070 28.1 13.2 PX4, Pistol 4" Barrel
7.5gr 1332 55.1 23.5 CX4, Carbine 16.6" Barrel
7.7gr 1089 29.9 12.6 PX4, Pistol 4" Barrel
7.7gr 1340 72.8 30.6 CX4, Carbine 16.6" Barrel