I hope you do not mind if I play the Devil's Advocate here.
The 7-30 is a little on the light side for moose.
Yet, there are many moose cleanly taken each year with smaller cartridges.
I'd go with the .358 with the Nosler Partition. They are big, big animals are are not responsive to lightweight, high velocity bullets. It's better to go with a heavier, larger diameter bullet that can punch through thick hide and bones to reach the vitals.
Canadian moose are almost always shot at modest ranges. A patient hunter should be able to place a shot behind the shoulder where there are no big bones, only ribs. Ribs and hide are not a significant barrier to any center-fire. The vitals (heart, lungs) are just beyond the ribs and hide. Big as he is, he is not armor plated. Canadian indigenous peoples have been taking moose with 30-30's and lesser cartridges for a long time.
A local gun shop owner, now deceased (C.R. Pederson, father of nationally know engraver, Rex Pederson), only would use a .243 for all his hunting including moose. He stated that if you shot them in the right place, nothing bigger was needed, and if you didn't, nothing bigger would keep you from hunting a gut-shot animal. Not to appeal to authority, but I have found that to be true, having shot many deer with a 6MM Remington, and an 87 grain Hornady
Varmint bullet...a combination that many shooters would claim and too small to be effective.
A .358 rifle using a Nosler Partition fills that need well.
If that is what you have, use it. If what you have is a 7-30 Waters, there is no reason that should not work either.
Hunting is all about bullet placement. Or, at least it should be.