Both guns will work I have killed a couple elk with a .270 but I would recommend bringing the .300 mag., and yes a 150 grain bullet would work but if you could I would go with a 180 grain. Really it isn't the size of the gun or grain of the bullet it all depends on your shot placement, but a bigger caliber and bullet does help.

If you can shoot the .300 well, take it and use a 180 gr. bullet. If not take the .270, which is about the low end starting point of elk rifles.

Yup either one thru the broiler room is going to bust ribs thru n thru, take the one that feels " lucky " this time.

If you can shoot the .300 as well as you shoot the .270, it's the obvious choice. If not, take the .270. Shot placement is the key no matter what you shoot.

To the term "knockdown power": Knocking down an elk is pure myth, outside of a 105mm howitzer or roadside IED. There is no shoulder fired rifle capable of "knockdown" on an elk.

An elk hit in the heart, spine, or nerve center might collapse on the spot, but you won't knock one down, so forget that term. I shot one three times at less than 100 yards with 225 grain bullets packing over 3,000 ft-lbs of energy and he didn't fall over from knockdown. He went down on the 3rd hit in the shoulder after 2 in the heart/lungs. Elk are tough, not tough to kill. If he's still standing, I'm still shooting. No matter how good a hit you think you made, shoot again. Some years ago, I watched the best bull I ever shot at walk away after what I thought was a good hit.

If you don’t know what you need, flay out you need a 30-06! Covers everything from Yodel Dogs to Moose and gives you back change!

300 mag belts the snit out of you with just 150 fps more and the critter will never know the diferance!!

.300 Win with 180 grain Partitions or TSX. The key is a good bullet. Premium.

If you want the kick go with the 338 Win Mag!

I think if I had a 300 I would take it but all I have is a 270 and if I had a chance to go for elk I would not hesitate to take it.

All good answers to your question. Mtn. hunter makes a good point. If he's not down with four feet sticking up, keep putting the lead too him. Shot placement is the key factor. Don't hesitate with your follow up shot, waiting to see, because you may never see him again. I would recommend which ever rifle your comfortable with. I hunt the west central Cascades in Oregon for Roosevelt's and long shot's haven't been a factor for me. I've used my 270 exclusively for all the bull's I've taken and been quite sastisfied with the rifle and the 150 Grand Slams. I've hunted with it now for over 30 years for elk, very comfortable with it and know what it's capable of. Which ever rifle you decide, have a good time and I hope you have a succesful hunt.

i killed my first elk with a 270!! it was about 100 or 150 yards away!! took it down, and then last year we got a bull elk with it from around 300 yards away...took him down too!! we use 180gr partition bullets, that might be the kicker...for longer shots...120gr ballistic tip. good luck

my brother hunts elk with the 270 and my father hunts elk with his 300 so i guess there both good guns. We've always had good shots at them and the bullets don't fall short. Just bring bullets when i shot my elk it took three shots to bring that thing down.