placement is the same for any other large animal.
Depending on the size of the animal that 165 gr pill may be a bit puny. No kiddin'!
On a buff I'd shy away from the usual LRH bullet high bc tendencies and go with a good ol proven Winchester silver tip with some weight and velocity to it.
Plus I'd seriously consider at least three quick shots before the critter learns what's happening.
Just my thought though. Never shot a buff but was really disappointed when I took a 270 Win w/a 130gr bullet to a 6oo lb bull moose.