LAST EDITED ON Jul-21-17 AT 06:42AM (MST)[p]LAST EDITED ON Jul-20-17 AT 10:12?PM (MST)
Nontypical is spot on. In my opinion though, TKnez's uncle has the best advice with goats..."you'll know it when you see it". Goats are so hard to judge because of several factors.
1). The capes on an antelope vary drastically. Really dark faced goats will tend to look bigger compared to ones that are more tan.
2) Depending on where you hunt, you may look at 40, 50, 100 or more bucks in a day. Some close and some far. After looking at 100 bucks, your head starts to play games with you. Factor in the average sized buck running around in your area...if the standard buck in your area is a 60" antelope, that 70" buck that your spotting scope finds is going to be looking pretty good after seeing 100 bucks in the 160 class range. Our brains are wired to see patterns, so that odd ball is going to naturally be compared to the standard.
3) Add distance to the equation with a spotting scope. If you are sizing things up on average say 1500 yards away and then size one up at 300, he is going to appear bigger to you. Again it has to do you how we are wired to perceive things.
4) Several posts gave great advice about ear length, mass, prong positioning, height, etc. All great advice. After seeing all those bucks, you start focusing on the part you really like. "My what mass he has, or that one is really tall, or that one has a prong up super high. You have to keep your whits and look at the total package.
This leads back to the advice of "you will know it when you see it". All I can say is I have only shot two antelope that haven't had ground shrinkage after I walked up to them. The two bucks that didn't, I knew it when I saw them. Didn't even have to go through all the...his prong in here, his length is this compared to his ears, his mass is this, etc. when you see him, he has it all.