The net score is the result of doubling the smallest measurements of the rack and then subtracting the lengths of all the abnormal points, which were never added into the score in the first place! Why would you want to do that? It's their book so you have to go by their rules to enter an animal. However, most people who are up on scoring, will agree that the gross score most accurately depicts the true size of the animal. It's nothing more than a descriptive tool, nothing to do with ego.
Another example....... this deer grosses 126 4/8 and nets 125 4/8.....125...126...what's the difference?