I can't see a reason to do a .35 Whelen when you can do a 9.3x62. IF the twist was right and you had a lot of 280 grain bullets available for the Whelen, that would be another story. Even if you put in a heavy bullet twist, you still only have a couple of heavyweights to choose from. The 286-300's make the 9.3 more flexible. If you want to shoot 250-grain bullets it makes more sense to use a .338-06 IMO.
