This year I used the AB in lieu of NP for a Elk and Moose hunt - 160 gr .284. In both cases the bullet passed through both bulls and was never recovered. The entrance hole was the size of the bullet, exit was 1 1/2 - 2" in diameter and vitals were destroyed. In both cases the animals dropped within sight, shots were 100 - 150 yards. Now in my case the bullet only touched the lower leg for bone structure, the rest was ribs and hide. But given moose have extremely thick hides I was impressed at the penetration the AB offered.

Like said either would work and would lean toward the one that showed you the best return on the range. Best of luck.