The 12 gauge bean bag fires a 40 gram proyectile @ 300 ft/s (older versions 400 ft/s, which proved a bit too much), and spreads to about 1 sq inch on the target.
The OSA bullet fires a 11.6 gram proyectile (phenolic rubber bullet with a metal core) @ 400 ft/s, with a 0.6" mm diameter, probably spreads on impact close to 1 sq inch. It has less power tan the beanbag, but apparently can be lethal at very close range if it impacts the head.
Another tool in the toolbox. With impact weapons there is never a magic formula for stopping people, specially if they are motivated.
I wonder if it will complicate things more for the trooper instead of magically bringing peace with no major injuries.