The round entered the box and shattered the brick.

This is the picture.

The round entered from the left side.

These are the pieces of the XM-193 ball recovered from the box of bricks (all we could find)

The round entered the last sheet of drywall sideways, (tumbling).

This is the entrance.

I was sent some bullets by thor-bullets, a member of AR15.com

He makes them and says they are "frangible".

He wanted me to shoot the box and report results.

I loaded them kind of hot, at his suggestion.

They are 69 grainers, jacketed, exposed HP lead.

This is the picture when I shot it.

The black edges indicate that it was indeed fragmented as it entered the jug of water.

It blew it up.

It never exited.

I am sorry to report that we were unable to recover any of the fragments.