I figured if it was that much better, more LEO and Military would use it but they don't. I supose some special units do.
The 40 seems to be the major caliber. Heck some of switching back to the 9mm.
Sure any necked down case will jump up the velocity. Like the old Tokarev round.
I do not worry to much about barrier penetration unless I am shooting at heavier cardboard.
