Listen guys, I am there with you. I have never used a 150gr bullet on either big game animal either. Yes, its always been a 180gr nosler Partition on both. Once I used a 200gr swift A-Frame. But a guy who is an advid elk hunter, and only uses a 270win posed this question to me. So I thought about it for a while. And so on my next trip out west, I plan on taking a 308Win with a 165gr barnes bullet. Instead of my 300Win mag or 300RUM.