ELKampMaster brings up a good point. Following is an excerpt of 270WSM performance on an elk hunt from another forum I visit posted just this afternoon.

"I used my 270WSM stainless stalker with the Hornady 150SST. I shot a raghorn bull broadside at about 70 yards. At the shot, he turned and I took the same shot again at the opposite side. The bull then took about three steps and went down. Both bullets exited and the exit wounds were about the size of a quarter. Based on the effect on the lungs, the second shot was probably not needed, but I make a habit of taking any shot a hit elk offers until he goes down."

I'm not saying the 270WSM isn't a good rifle, I've got one. But when I've earned my spurs and am ready to go on an elk hunt, I'm gonna take that as an opportunity to add a 338 or 375 to the arsenal. They'll know they've been hit with that.