Re: All purpose hunting rifle/round
You really don't need a 300WM to kill an elk unless its a long ways out and even then you still don't need it as it's going to come down to bullet placement.
My thinking is if I'm going to pay an outfitter and travel first I'm going to make sure I have a rifle that is going to work no doubt, and second I would make sure it's in a caliber that I can get ammo for no doubt. Shit happens, a rifle can fail, and you can forget or lose your ammo so you gotta be prepared.
If I was going on a trip that I have a fair amount of $$ tied up into I would take a Sako 85 or a Weatherby Mark V. Forget the typical production rifles that are more likely to have issues when you need them the most. I would buy it in 30-06, 270, 308, or 7mm mag. Any of them will kill anything in NA deader than hell. I would probably pick something else for a brown bear but for elk and even moose, no problem. The best part is you can buy ammo for them anywhere. You may have a little more trouble finding ammo for the 7mmRM but you should still be able to locate it. 270, 308, and 30-06 there probably isn't a walmart or gun store in the country that doesn't have a few box's of each.
I would have a back up gun too if I was traveling and paying for a hunt and I would have it in another one of those chamberings. If you lost your ammo, and you couldn't find ammo for you're main rifle there's another chance of finding some, plus you have a back up rifle in case something happened to your main one. I probably wouldn't go all out and get a MarkV or Sako for the backup but I would stick to the more reliable side of the factory guns. Winchester, Tikka T3, and Weatherby Vanguard are all great reliable choices. I'm a Remington fan but I've broken extractors, a bolt handle, and had feeding issues and I just couldnt trust one on an expensive hunt. Same goes with Savage, they make a accurate rifle but I wouldn't trust the accutrigger to perform when I need it.