It was kind of hard to line up the 4 walls and try to get the round to hit all 4 of them.

This entrance to the second wall illustrates why this was a problem.

You can see the tumbling of the round.

This caused a lot of deviation from the original path.

Might as well try the "Street Howitzer".

12 gauge with Remington "Slugger" Slugs.

This is the entrance of the second wall.

Interestingly, this is the entrance of the slug into the third wall.

Looks like it might have been traveling sideways at that time.

Needless to say, it exited all 4 walls.

We tried several more rounds of M-193 from the AR.

A couple more interesting pics.

This is a round of 5.56 as it enters the third wall.