whitearrow,
Water-filled jugs are cheap and handy, but not particularly indicative of what bullets will do on big game.
The other factor is that ALL "hunting" Ballistic Tips will separate core and jacket. I know this from shooting them in calibers from 6mm to .375 (yes, Nosler briefly made a 260-grain .375 BT) into big game, not water-filled jugs.
Supposedly the core leaving the jacket is a big deal. It used to be, back when big-game bullet jackets were all relatively thin. But it doesn't matter all that much when the jacket weighs as much or more than the core, which is the case with the hunting Ballistic Tips.
