It went through all 4 walls also.

It was clearly mushrooming, but then broke into two pieces.

This is the back of the 4th wall, where you can see the two pieces and one penetrated and one was stopped in the wall.

Then a round of Frangible 5.56 that my friend Hardshell sent me.

It is not designed to work as an anti-bad-guy round, but let's see what it does in drywall.

That's the entrance into the second wall.

It had broken into 4 pieces, but they were still penetrating.

This is the entrance of the frangible round into the 4th wall.

Notice the spread.

Due to many requests, we tried a round of Winchester JHP from the .30 Carbine.

Caught the round of brass in the air just behind the front sight.