I've hunted elk for 40 plus years with some success. I go with the boiler room behind the shoulders. Here's why. You would in most cases get only the near shoulder. MAN! a elk can cover more ground on 3 legs faster in a few minutes then you will cover in a day. A well placed shot in the heart/lung area is a easy track, many times wobble a bit and drop on the spot. If you do go for the "blast into bone" make sure you have the gun and bullet to do the job, both shoulders. Those that go for the vitals just behind the shoulder, for sure a 270 is just fine.