I see that the thread has been locked out on this subject over in the "Ask the Experts" forums. I don't have any experience with these cartriges but, from general consensus over there, it seems that the difference in performance is marginal. Some seem to feel that this is a short-lived fad. What, in your opinion, is the most current "fad" that you predict will die the quickest? I went to the local sporting goods store (Scheel's) in order to spend a gift certificate today and was hard-pressed to find any rifles there chambered in .300 Win Mag. I had to sort through all of the .300 WSM's in order to find one or two. Have any of you non-dealer-type people found this to be the case in your area?