I'd see how well it shot 160 gr. Accubond and 160 gr. Partition.

Others will have their opinions, but those two bullets have stood the test of time on such critters.

Here's what JGRaider did in Africa with 160 NAB's out of a Tikka 7RM. The .280AI is pretty close to the 7RM. IIRC, JG used the NAB because it shot better in his gun than the NPT. I have guns that like the NPT, others that like the NAB.

https://www.24hourcampfire.com/ubbthreads/ubbthreads.php/topics/8855404/1

I'd see which one shoots better in your gun, go with it.

IMO.

DF