I have taken a good many elk and a few mule deer with a 338 WM. Most of the time I used 210 Nosler Partition bullets often pushed by IMR 4350 or RL 19. I do like the heavier bullets in my 338 rifles but the 210 seems to hit above it's weight class and is very effective on elk sized game.

The 9.3x62 is becoming more popular in the US and is often used in Europe and Africa. It seems to me to be nearly identical in performance with the 35 Whelen as an effective mid-range game round. I have used it in Africa, but it is not legal everywhere in Africa for big game.

Good choice in picking a 338 WM. It is a powerful round with manageable recoil.