The Ballistic Programs I generally use for my rifles all require bullet B.C's. Does anyone know of a program that I can enter trajectory info (i.e. Drop/elevation, projectile wt) for different yardages at a given temp and elevation to see how the trajectory curve changes at different atmospheric conditions? Temps here in CA are pretty mild here still and I'd like to see what might happen with my current sight-in at higher elevations and colder temps.