Been lurking for awhile, but this is my first post.

I only have my experiences to go by. I've never killed one of those little Rocky Mtn elk. Every elk I've killed has been a Roosevelt. (Bigger body, smaller horns). In my life I've put 34 elk in the freezer with everything from my bow to a 340 Wby. I've cleanly killed 17 elk with my old 270. Like has been said, a properly placed shot means a lot more than the weight or constuction of a bullet. I'm not an expert by any means, but in my experience, a 270 puts an elk down just fine. I used 130 gr. Sierra SPBT for years. Yes, the core shed the jacket, but the reason I know that is because I always found the jacket...when I was skinning it.