In an area where wind is a factor, regardless of distance, you really need to start studying the ballistics tables for high BC bullets. The difference between say a 120 Partition or a 120 ELDX in the wind can be pretty amazing once you study your ballistics tables or programs...even at 350-500 yards the difference can be a surprising amount. The next thing you need is practice, practice, and a little more practice..... cartridge choice is several places down the list IMO but if it were me, I would go with the Hornady ELDX , Nosler Accubond, or a Barnes of your choice...

Bob

Never underestimate your ability to overestimate your ability.