Tell me what are the advantages of 40 Smith & Wesson.

[jimbo-indy]

The only thing I like about .40 is that it makes good plinking/practice ammo instead of full house 10mm ammo in my S&W 610.
Attend a bowling pin match. You can see the difference between how the pins react between 9mm, 40, 45 ACP and other loads. Even max 9mm loads didn't move the pins as well as good 40 loads. That being said, good 40 loads compare well with 45 ACP but neither move the pins like 10mm or even 357 mag. IMHO.
Now, that being said, bowling pins are not flesh and bone. People and animals respond differently than wood. Depends on the intended use.