Thanks for watching and for the feedback, Michael.
Those types of tests have been run many many times by many people/agencies/organizations. The results are very consistent. There are already a couple of threads discussing the details here in the TBD forum and the Defense & Tactics forum.
The demo's are not meant to Suggest anything. They are meant to show that pistol rounds generally penetrate with more energy, and therefore go through more wall sections, than the .223 55gr carbine rounds. We also show that, unless you are going to step down to birdshot, the shotgun doesn't really reduce the threat level significantly to the people in the first room or two beyond where you are shooting.
For some people, penetration concerns ARE a significant factor in their firearm/round choice, for others it is barely considered. It is one of those choices that people have to make for themselves, but we want it to be an educated decision not a guess or one based on gun-shop-wisdom.
-RJP