I’ve never owned a .300 Winchester Mag but one .338 was simply less accurate than I could bear. I favor the .35 Whelen and 7mm and .300 Weatherby's most days, but I may switch to the perfectly adequate 7x57 on the downhill side. Any .300 Mag is more than adequate for elk beast as is your .338 WM. Heard that on the Campfire, too....

Life Member NRA, RMEF, American Legion, MAGA. Not necessarily in that order.