I would develop loads with H4831 or H4350 and 130g Accubond or Interbonds and 150g Partitions first. They will kill anything out to 600+yards.
The Bergers would come after that. They are usually a little more difficult to find a good load for.
The H series powders are not temperature sensitive. R17 is supposed to be not temp sensitive and may be a good one.