Allot of Ballistics gets answered in figuring MOA and MILS, but there is still physics to be done and different things to figure out. How far will my bullet go? This has to do with allot of different factors, including the curvature and rotational speed of the earth. Depending on how far you want to shoot of course. A simple equation you can use is.
Using this equation and solving for time 't' will pretty much tell you how far your bullet will go.
Distance is equal to the rate (speed of the bullet), divided by the time the bullet was in the air.
There are some ballistic calculators out there that make all this very simple and very accurate, as they take in every possible aspect of you bullet in flight.