GREAT cd! I bought the first one and liked it and then the maker (forget her name) told me that, since I had bought it within a certain time period before the release of second edition, I got the second edition for free! Got that and love it. It really teaches you the whole mil-dot thing. The current edition has different calibers that you can choose. I am wanting them to give you different reticle types, too. Maybe some day. It would be nice if they let you custom-design reticles to try their ranging properties.
I still suck at windage, though.