When I see a youtube video of a ~~2070 yard shot with a 338L or 338E, I run the numbers and the 338WM would have that terminal velocity at 2000 yards.
I have a 338WM reamer, dies, brass, rifles and barrels.
I never have killed anything past 510 yards, and that was with a 270.
I could buy a 338L and 338E reamers, dies, and actions with that bolt face, but I can't see any real gain.