Tried some American Eagle 124 gr subsonics, 9mm.
They are $0.38 per in my area.
V average was 1085.
V max was 1091.
V min was 1069.
G17 platform, 5 round sample, Magnetospeed chronograph.

see photo...

I compared these with five other brands of 147gr and 158gr ammo outdoors recently (using TiRant and Octane). These subsonic 124gr were the loudest; they have a loud pop to them... at least to my ears. Only good for indoor range use, where you have to wear ear pros anyway.