CDR,
It was a short (Typical TV) version of the tests. Phil Strader shot a 9mm, .45acp, .223 ball, #4 buck and birdshot into drywall sections and analyzed their penetration through multiple sections. Much of the educational info also came from the conversation between Phil and I (Phil is also former LE as well as being a successful competitive shooter) about our previous tests, observations and research.
I watched this edit version late last night for the first time, as I recall:
The 9mm penetrated furthest with the least deviation.
The .45 acp was next.
The .223 show significant yawing, loss of energy and deviation much more quickly than the pistol bullets, but because it was not HP or TAP did not break up in a similar way, which we mentioned.
The 00 Buck penetrated significantly more and carried more energy than the birdshot.
We also shot the birdshot into the badguy reactive target at typical room defense distance to show the size of the pattern and indicate the massive damage that would be likely from that round under those circumstances.
We are working on getting a much longer version as a BONUS on the Best Defense website.
-RJP
[edited to correct the shot size in original post]