Hi, I have a .30-06 Springfield Sporter , 24 inch Barrel with 1:11 twist. I use Hornady's Match Grade A-Max Bullets at 168 grains. For my primers I use the CCI-LRP and for my Powder, I use VihtaVouri's N150. I needed t know how much powder loasds must I have in my case to be very (pin-point) accurate at very long range targets at 300 yards or more . I shoot Varmint Monkeys at the tropics. I only go for head-shots for instant kill... otherwise, I may not retrieve the trophy and just be a waste of sport. I understand that different Rifles have their own characteristics, but I have to start somewhere! Can anyone please share me their expertise? I an most appreciative. Thank you!!!