I can't comment on the bullets you asked about except to say that at 15 hardness they are only good for breaking bones in larger animals.
On coyotes, foxes and groundhogs they will simply punch a hole right through with little or no expansion.
Drive them at 1100 to 1250fps and they will break both shoulders on a deer.
I use to use lead bullets that was 15 hardness also until 5 shots in a yote didn't stop it and 2 of them was at less that 10 feet.
I now load JHPs in my 45s.
LONGTOM