The other thing that is not taken into account is how violently the milk jugs left the table.
The 9mm poked through some and left them still sitting on the table...albeit leaking. Anything hit with the 454 turned inside out and simply disappeared.
I would like to see a similar test done with a 454 and a hard cast, heavy, non expanding bullet. I suspect that he would have shot though that entire line of jugs, end to end, and maybe the backstop as well.