Just to add:I’d use my .338 Win Mag or my .375 Ruger.
Your 9.3 should work fine too if legal.
Might want to look at the Nosler Accubond.Going to see if I can find some 375 ammo with 300 grain Nosler Partitions. I have 300 grain TSX and have killed enough hogs with them to be very confident in their ability to immobilize quickly.
But a Partition is supposed to be the gold standard on big cats.