I'd prefer, for the sake of both keeping things simple and doing a little experimenting, to just use one round out of one rifle for all three. That means finding a bullet that wil hold up and penetrate on an elk but isn't too tough and will provide proper expansion for antelope and deer
I always us one rifle/one load in the fall, antelope to elk. In the 30-06 a 165/68 or 180 Ballistic Tip, Partition or Accubond would be my choice.
In the 25-06, I'd use a 110 Accubond, 115 Ballistic Tip or Partition or 120 Partition.
Pick something that shoots well and kill stuff.
