This comes up once a year.
The .270 winchester is adaquate for moose, if your comfortable with using it. If its a guided hunt contact your outfitter and find out if he approves of your choice, its his territory and he knows it better then you.
I prefer a 150+ grain bullet for moose out of a .270, but If you've had success using your 130gr load on elk it can probably repeat that on a moose.

I've killed a couple moose with a 243 but only took a broadsided shot on each. If you reload why not load some 150 Noslers and have a real top notch rig.

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The only rifle I use is my 270 win for deer and moose. I use only 150 gr Nosler Ballistics tips and 57.8 gr of H4831 powder.
Has never failed me.

If I was gonna use my 0.270 for Moose i would go with the Nosler 140 grain Accubond first and then the 150 grain Ballistic Tip second. Either on will do a fine job with proper bullet placement.

Any cartridge that is good enough for elk will work just fine on a moose.

if using 150 gr bullets you will need something strong than the thin jacketed ballistic tips and possibly thicker than the accubonds. they expand to rapidly to offer penetration on a 150 gr bullet at your velocities

just Google "ballistic tips on Moose" and you'll see.

i would try nosler partitions or banes bullets. incase you touch a few ribs or a shoulder that disintegrates the ballistic tipped bullets

A guy used a 270 weatherby on our moose hunt in Alaska and he dropped it with one shot. I used a 338 on mine but I was also hunting grizzlys.