I also like the Ballistic Plex, there are several loads that aren't much more than a inch off at any of the ranges listed. I know this isn't totally exact, and I would have to do some expierementing,
If and that is a big if,you can find loads that match the ballistic plex,it will help a great deal with holdover.However as a range estimating tool,the ballistic plex isn't a whole lot better than a guesssince game animalsvary so much in size.The only practical andtruly accurate tool for range estimation for huntingis the laser rangefinder.