Thanks for the G7 ballistics calc. I can not tell you how great it worked for me. I got a new rifle last winter and our range only is 100yds. I was invited to a match yesterday where we shot out to 950yds. I used the calculator and trusted the numbers. I never missed a target!! Still can not believe how the numbers worked and how nice the rifle shot. Clay Spencer rifle, Mark 4 scope 6-20, 300WM, 200gr accubonds. Thanks again