And then use that ammo consistently. If you know the drop and general ballistics for your ammo, wind calls are relatively easy. If you know drop and wind calls, you know enough to get reliable hits with corrections. There certainly are plenty more factors to long range shooting, but focus on drop and wind to start. The second factor is reliable ranging and distance estimations. I used a good mil-dot scope and a good rangefinder when I was learning - I'd mill everything out in the scope, and check my accuracy with the rangefinder - that really helped for learning, until I got good enough to reliably mill everything to a relatively close distance with just the scope.

Are you getting the MRAD or MOA version of the Vortex diamondback?