You're going to see all kinds of bucks in that unit and sorting the best ones isnt easy. Keep in mind the size of the bodies on the bucks you're looking at, compare them to any mature does that may be with a buck you're trying to judge.
If you look at the record book, you'll notice that most of the B&C bucks from southcentral Wyoming are in that 14.5-15.5 range with exceptional mass and prongs.
I took some pictures of this buck in 57 a few years back. This is the type of buck that you should look over closely. It has the two things I look at first, good mass and a good prong. Its also a big bodied antelope with a big head. The one problem with this buck is that his prongs are low on the horn.
Heres another buck that I took a picture of the same day. This buck was not nearly as big bodied and this picture really illustrates why you need to look at a pronghorn from more than one angle when judging. He looks good in this picture, but I think this buck would have to hurry to make 76 inches.
From a different unit, but this buck is probably right near 80 net B&C...two views:
A couple pictures of a net 80 4/8 buck my wife shot a few years back...
Another buck that you shouldnt have any trouble wondering about:
This buck I'd think would be around 76-77ish. He has good length, good mass below the prong with a solid prong, just too thin above the prong.
Good luck out there and keep MASS and PRONG in mind...