Im looking to see what programs everyone is using and how they like them? Any input is helpful! I'm also looking for somewhere to buy a complete set up. My other question is How much does temperature affect the shot. Reason being I went and shot my 338 Lupua at 600 yards and figured 8.5 MOA put me on target and I shot a 1/2 MOA in 75 to 80 degree weather. But just two days ago I went and shot at 600 yards in 45 to 50 degree weather and I needed 13 MOA to get on target. Will a ballistic program help me with this problem.