Yea Jim Wilson and the Gunsight people don't know....
Then again they ain't guessing.
I watched the clip and I'm not sure what global conclusions can be made.
It looks like they showed that the birdshot penetrated the first layer of drywall. But beyond that they didn't really compare the three loads.
And the whole point is about penetrating people, who aren't made of drywall.
So to my way of thinking, which could possibly be slow on the uptake, they showed that those who choose birdshot because it will kill bad folks, but not go through a wall and hurt their family, are now possibly proven half wrong, with the other half still up in the air.
So what am I missing?
