A hundred pound Sow is eating size, they don't get better as they get larger (older) and IMO an old Boar tastes bad. If I have a choice I'll shoot the one or two year olds and not the really biguns.
Speed in a bullet isn't everything, one it tends to damage more meat. The hydro static shock bruises the meat and makes it look kind of unappetizing. And two it might not be the most accurate round for your rifle.
Sounds like you had good shot placement, it isn't easy shooting a Hog through the heart and dropping it in it's tracks.
I tried loading two 200+ pounders into my pickup truck one night. My bad back got a lot worse. I leave the really big ones for somebody who needs the ego boost and isn't afraid of a hernia.
My home loads perform as good as, if not better than, match grade ammo and are a lot cheaper. I'd like to find a bullet with just a little more expansion, but I'm afraid to mess with success and stick with what I've got.