Federal...
150 nosler partition (did the job on a 7' vancouver island black bear)
140 accubond
130 TSX
Rem 140 Swift A-frame would be pretty sweet
I think I'd want a heavy premium bullet with controlled expansion.
Ideally 150 grains, but those triple shocks are pretty awesome, but only loaded in 130grs?
Maybe find a custom loader to load you up some premium 150grainers...?
I think of all those loads my #1 pick now would be that Remington 140 A Frame, nearly 100% weight retention.
Any of the above bullets would work fine for moose.. A friend of mine has shot 2 with his .270, both with the 150 grain nosler partition Fed premiums..
Shoot 'em in the ribs and they'll tip over in good order.. Might take 'em a couple of minutes to figure out that they are DEAD, but you'll get your moose..
Hornady loads a 140 grain accubond in its light mag ammo, flying at 3100 fps, I dont know about moose but its done a number on everything ive shot with it.