Yes the so called macho FBI in their textbook example to still use in training of a Charlie Chaplin take down and lost.
Of course they had to blame someone else and that was: Oh the 9mm was too weak
Then they invented the 10mm.
I short order: these rough tough macho FBI were crying again: Our limp wrist can't handle such a huge cannon.
So then back to the drawing board and they shortened the 10mm and called it a 10mm short
Oh no the rough trough macho FBI had a problem with the name "Short" so they call it 40 cal.
I too believe, as most people did: if a 10mm is to strong for the rough tough macho FBI, many that is not for me
In ending, many have come to realize the 10mm is stronger and more powerful but find out for yourself and not believe the FBI crap able being able to handle with ease