The below is not even close. Fat isn’t even as dense as ballistic gel, because it is designed to be about as dense as human muscle. On average, the density of fat is 0.9 g/mL. The density of muscle is 1.1 g/mL.

Therefore, a 9mm round would penetrate about 12 to 20 inches into human fat, depending on the type of round, distance, etc. Yet more Fat Acceptance delusional BS. The sad part is that many probably see and believe this.