Might also mention that I've taken big game with several .300 WSMs--one before it was formally introduced. The animals varied from pronghorns at ranges out to nearly 400 yards, to a 6x7 bull elk shot at 100 yards in thick timber. It worked very well, but can't say it worked any better than a .30-06 with similar bullets--except for shooting a little flatter at longer ranges.
In general, they're easy to get to shoot well. But one of the big reasons I sold my last one a year ago was brass started to become harder to find compared to .30-06 and .300 Winchester cases.
