[cuban leaf]

“It’d take a whole lot of silk to stop a 9mm. Denim and leather however has been found by FBI studies to stop 9mm bullets or at least reduce the velocity enough that lethal penetration is impossible. A good thick winter coat is almost a bullet proof jacket against a low end 9mm.”

From here: https://www.quora.com/How-many-cotton-t-shirts-would-I-need-to-wear-to-stop-a-9mm-bullet-shot-from-a-pistol

And here is more: https://www.m4carbine.net/archive/index.php/t-129949.html

I’ve also heard that some windshields will deflect a 9mm round. This sort of thing is why I almost didn’t go 9mm. Almost. :)

[Mariner]

Nothing but conjecture at those links.

From somebody who “heard it” too.

Rationally analyze the physics:

124gr, .355 bullet traveling at 1200fps.