ORIGINAL: trimmer905
Most eastern Canadian hunters use .308 or 30.06 for Moose.Eastern Moose aren't as big as you'd think. A .375 will blow a 10lb. roast out the other side. If you need to,take the .300WSM just in case for a back-up,but I'll bet you don't need it.
Any of the others you mentioned will waste more meat than a 375 will. Especially the 300 super pooper. Its a big old ugly bullet workhorse of a bullet that will plow thru anything this continent has to offer. I am going antelope hunting with mine this year.