Mad Dog,
My recommendation is to pick a load that will do the job on the largest animal you may take on a hunt, it will work on the smaller animals also. But if you pick ammo that is perfect for the smaller game, it may fail when used on the large animal!
Here in Alaska most people don't hunt sheep or deer w/a .243 or .270, even though they are good to great rounds for those animals, they use a .30-06 or bigger most of the time. That way they are ready in case they run into mr. brown bear, moose, elk, big black bear etc.
I suggest going with the Federal Premium loaded w/the 170 grn Nosler Partition, a conventional 170 grn load, or maybe the PMC Starfire loaded w/the 150 grn H.P. barnes X-type bullet (I think they are the one loading that bullet for the .30-30?) The .30-30 is a great cartridge, just choose the right ammo for the job!
Sounds like a great hunt, have a good time!!
Del