Just looked through the new Hornady catologue and in there, was listed all THEIR new and specialized ammo.
They new defensive loads in handgun, include a number of special tests for penetration from heavy clothing, to wood, metal, glass etc.

The .45 Auto loads equal or exceeds the 9mm ammo in every category, especially in metal penetration. I did not read further on what metal was used for that test, but it is usually car doors in the police testing I am familiar with.

The .45 Auto "Critical Defense", 220gr.'Flex-Lock' load they used is just over 1,000fps.