Mackay's hardcast sold here!
This would be my choice
My choice also. I shot one into 20% ballistic gel (not 10%) and it penetrated 22." Which would be about 36.75" in 10 % gel
That load punches through sheet metal pretty darn easily as we have discovered. Same with cow heads, wood, ballistic gel, and various intermediate barriers.
When the riots were happening a while back and various groups were being mostly peaceful and dragging individuals out of their cars, shooting them, running people over, using a car as a weapon and various other methods of attacks against innocent people, I swapped out all my JHPs for heavy+P hard cast 9mms. They were a better choice for all around trail and defense use in my opinion.
Since we are about to enter another major and important national election, I expect that we will see more of this. I will definitely be carrying the heavy hardcast as my primary loads.