Thank You! It works much better in my program to match actual drop. Applied Ballistics is Litz's book I've found out. I appreciate the information.
I was shooting the Scirocco at 1075 yards out of my .264 Win Mag on Sunday, and had to add about 4 minutes to my printed data at that range to make hits. The G1 in BulletFlight is .571 and works well out to about 900, then starts to deviate.