25 ACP penetration test. If it penetrates a 2x4 will it penetrate a leather jacket?

I had people mention several times that a 25 ACP will not penetrate a leather jacket- they say it will bounce off… so I decided to shoot it through a wooden 2x4 and it did it with no problem. It may not have a lot of energy, but it most certainly will penetrate a leather jacket if it will penetrate a 2x4.