L. Sherm showed you a pic of Jason Baney's ladder test as posted on accurate shooter. I have been doing this method since before I found Jason's article. Alex Wheeler has several posts on here as well as accurate shooter. I also put together a youtube video outlining the method. It is the single best way to an accurate long range load period. Shooting 10 rounds over a chrono into dirt is a complete waste of time, money, and barrel life. The OCW is a great method if you don't have long distances to shoot but is harder to read and requires more rounds.