Bobby,
I didn't say that Ballistic Tip hunting bullets ALWAYS separate core and jacket. I said they all will, meaning they sometimes do.
I primarily wanted to point out that it doesn't really matter whether the jacket separates or not, because the jacket's heavy enough to keep penetrating. I know this from shooting a bunch of them from 6mm to .375 into test media, plus big game from pronghorns to elk, and similar-sized African plains game from springbok to gemsbok.
