Forget the HE value, don't go in a subject in which you are not confortable talking about.
You said taht they penetrate you KGV and QV? You really sure about that?
I am checking the value right now, and the stats tells me flat away that they do not penetrate that much armour.
These are 10" 12,6" 14,5" which happens to be at least half of the cited gun.
The only gunset you are right about is the 13,5"
You sure you aren't exagerrating a little bit?