Compared to a couple of the other big bucks you have photos of, his cutters are not positioned very far from the length of his ears. His spread is real nice and has good mass and nice curl to his tips.
There is one buck you have had photos of that has the length from skull to cutters that is much longer than his ears and also has long nice curve to his tips and lots of spread.
http://www.rugerforum.com/phpBB/viewtopic.php?t=124692
and the other bigger one
http://www.rugerforum.com/phpBB/viewtopic.php?t=125708
your photos would be well worth studying before any pronghorn hunter goes out there and tries to understand just what they are seeing in a spotting scope or rifle scope. A few of the bucks you have posted photos of are definately trophy class with mass, spread nice curl and length you just do not see in many bucks. When I was working in the Tularosa valley in New Mexico a rancher showed me some real nice bucks through the spotting scope and drew me some drawings in the dirt about how he measures size in comparison to their face & skull, ear length and such. Until then all buck antelope were the same to me through the scope.