are they moving away from the .40 because it doesn't work? no more like the 9mm is cheaper and to save money. anyone that shoots knows a box of 40 is about 6-8 dollars difference and when you buy a lot that adds upThe line “I brought you into this world and I’ll take you out” is often used jokingly, but it may be accurate when it comes to the FBI and the .40 S&W cartridge, especially in light of a 2014 report by the FBI’s highly respected Training Division.
First, let’s revisit a little history, shall we?
The .40 S&W cartridge only exists because of the FBI. It grew out of the FBI’s search for better ammo after the famous 1986 FBI Miami shootout where two agents were killed and five wounded. The FBI laid a lot of the blame, right or wrong, on poor ammo performance in that gunfight. The suspects suffered fatal wounds…but kept on fighting.
If you pay any attention at all to used gun sales, especially law enforcement trade-ins, you will see that the market is flooded with .40s. There is a very specific reason for that; law enforcement is moving away from the .40 S&W in droves.
It is not that their guns are aging; it is that they are determining that there is now a better alternative to the .40 S&W, and that is the 9mm. Yes, what is old is now new again, what was bad is now good.
Read more: Is .40 S&W Dead? - Firearms News