I have two loads that are shooting consistant 1/2 moa better groups for my 284 Win. One uses a 140 gr. Barnes TSX and the other a Nosler Accubond. Each has maintained 1/2 moa out to 400 yards ( as far as I can shoot at the range I have access to). Which bullet would you use for whitetails ranging from 30 to 500+ yards?