Accuracy and Precision for Long Range Shooting
, by Litz. Buy this book and read over and over until you have a fundamental understanding of what level of accuracy and precision it takes to make your intended long range shoots with consistency.
For the scopes, MOA MOA is a preferred setup. Mil Mil will work but most seem to prefer the MOA MOA. The Nightforce NXS 5.5-22X56 with NP-R1 or MOAR reticle will make an excellent scope for hunting purposes. You will diminish your elevation adjustment capabilities with the higher power NF scopes. If you are aware of the required elevation for the range and ballistics profile you will be shooting then the higher power scopes will also sufice.
For ballistics start here.
JBM - Calculations - Trajectory (Simplified)