FWIW, it really doesn't matter with range ammo how fast it's going as long as it cycles the gun and is accurate.
But out of curiosity a few years ago I did some chrono testing of 5 lots of factory 9mm 115 FMJ stuff. Here are results:
1. WWB WCC 12, NATO crimped...1156 fps
2. WWB WIN...1227 fps
3. WWB WIN...1173 fps
4. Rem. UMC...1157 fps
5. Fed. Champion...1169 fps
Conclusions?
All were equally accurate and worked just fine. With the exception of lot #2, all were between 1150 and 1200 fps which is perfect out of a 3" M&P9c. And lot #2 was only abut 50 fps faster than the rest. Interestingly, the slowest of the bunch was the military NATO WCC 12 crimped primer load. But only by a hair and still plenty adequate.
For comparison purposes, I also tested some SD rounds. Results:
1. Fed. HST 124 +P...1236 fps
2. Rem. GS 124 +P...1126 fps
3. Speer GD 124 +P 1157 fps
Overall conclusion? None of the factory low end range ammo was inferior or deficient in any way. It was not weak, wimpy or underpowered. It wasn't dirty. It was accurate. And velocity-wise it was right in there with three lots of some of the best SD high-end ammo available. The Rem. UMC was even the exact same velocity as the Speer +P Gold Dot! These results indicate that 115 grain generic ammo is a very good practice analog for top end 124 +P ammo.
So, take your pick. Empirical data or internet hooie.