Not going to telyou the weights, but for me RL 19 for my hunting loads, as it give s me a bit more velocity, and practice use RL 22, for lower pressure.

ONe of the really neat thigs about the 338, is in the lower 48, any weight of bullet works. I prefer the 250 gr as it doesn't get shoved around by the wind and carries its energy all the way out, but a 200 holds its own, and is plenty hard hitting.