Looking for the math

[Mecharius]

Also understand that the different ballistics calculators use different math. A lesser program will show the same wind drift left and right at 1000yds, whereas the more advanced programs will have spin drift computed.

Bryan Litz's program is one of the best on the market, complete with his BC analyses for the bullets in the memory of the system.

One of the more overlooked programs with dead-on accuracy is Lapua's Quick Target Unlimited, which uses actual Doppler radar data for the Scenars, not theoretical drag models. Accuracy for trajectory prediction is 3cm at 1300m IIRC.

Going to have to check out Lapua's program. Was unaware that they had one, though it's not surprising.