I certainly agree in the similarities of the WR and .338-06 and similar rounds, nearly identical in performance. However I would note that 250 grs is not a heavy weight in the .338 caliber. For years Speer made a 275 gr and I believe at least one maker still does, Swift I think. Plus Sierra makes a 300 gr match bullet. In fact Winchester used to load a 300 gr slug as well for the Win mag. But not to pick the nit, LOL!