Maximum pressure for the 40 S&W is 35,000 psi, a level that I would consider far from "extremely high". Fact is that the max pressure for 9mm is 34,084 psi and nobody call the 9mm an "extremely high pressure" caliber. They also don't call the 357 Magnum an "extremely high pressure" caliber and it just happens the max pressure for the 357 Magnum is 35, 000 psi.

Yeah, an off track rant. However I do wish folk would crack open a reference manual before they start spreading claims they read on the Internet. Folks, not everything you read is actually true.

BTW, a reference.

List of handgun cartridges - Wikipedia, the free encyclopedia