If you sight in at 75 yards, the drop at 100 won't be as bad, and the offset at 50 might be OK. Didn't chairgun give you a picture of where the bullet crosses when sighted at different distances? I seem to remember some software that showed a picture so that you could get an idea about where to sight in to have the largest range where the bullet was +- a certain amount. Like sighted at 40 and 70 with 50-60 slightly high, as well as the drop beyond 70. Maybe I'm thinking of another tool, and if so the name is lost.