Hello! You arent' going to mess around, right away your going to get yourself an expensive rifle to shoot!!
I don't have any experience with it, but I'll throw this out there: I have heard that they can be tempermental to load for, but I could be wrong. The 6.5-284 is already a hotrod and hard on barrels. I beleive the WSM holds more powder yet, so it will really be overbore. Good luck and wait for more knowledgable members to pass their infoe ;)
I used to re-load but now I "hand-load".
-- Well, at least I try