I have two 300 WSM bolt guns, one does not like 150’s at all. It does shoot 165’s so well. The other loves 155’s as does my favorite 7 Wby. I once lost sleep over which to carry on a hunt, so I carry them both. Since the 300 WSM is the ballistic twin of the 7 Wby, I feel no loss of gain.

"I never thought I'd live to see the day that a U.S. president would raise an army to invade his own country."
Robert E. Lee