I would say the partition. I have shot 16 whitetails with a 160 gr. partition in my 7mm Rem Mag. (meager to your .338) and all but three ran off and had to be trailed. I never lost even one. I shoot the Whitetails through ribs to lessen the shoulder distruction associated with todays hard hitting fire arms. There has never been a problem with penetration, all complete pass through' s even at 400 and 500 yards. I believe that the partition would be alot better for big game like Elk due to the performance that it does on whitetails and it' s solid base and high weight retension.

Good hunting.