Froggy, Tillroot1, How are you guys doing? It is GREAT to hear from you and I am surprised.
In fact, I hope that you guys will come to Colorado and visit, it would be great to see you.
Caddie5: The ACI needs to be level with the bore of the barrel to work as intended.
I am not familiar with the Leupold line of binoculars, however if they have an angle indicator in it similar to the Leica Vector (now Vectronix) it should do that well. However, if it is delivering the distance to target based on the "Rifleman" method, it can cause you to miss your target as much as 8 moa in comparison to utilizing Ballistic Targeting software, such as Night Force's / Exbal.
Reticles and power for Long Range Shooting is based on both practicality and personal preferences. In a hunting scenario either a mil-dot or moa reticle works very well. I strongly suggest that the reticle that you choose will subtend with the click value of the turrets. In other words, if you choose a moa reticle, then the click value of the turrets should be in moa. If the reticle is in milliradian, then the click value of the turrets should be in 1/10 mil's.
The mil-dot (milliradian) reticles work best for military usage and while working in the metric system. It is much easier to use and much faster to range with than anything else because one mil-dot measures 10 centimeters at 100 meters, 20 at 200m, 30 at 300m etc... and 100 centimeters at 100 meters. The measurement form the hips to the top of a mans head equals approximately 1 meter (100 centimeters) So if the hips to the top of head fits within one mil-dot, the adversaray is 1000 meters out, if he fits within 2 mil-dots, he is 500 meters out, 3 mil-dots = 333 meters out, 4 = 250 and 5 = 125.
Knowing this with memorized holds, as well as having 26 inches (66 centimeters) of target, is very fast.
The one element that is not addressed with "holding over" is that it is quite accurate when shooting flat out to 600 yards. However, you are moving your eye off of the ocular center of the glass, which can cause the bullet to impact slightly higher than intended.