It's been a few years since I've been out that way. And I'm not what I would consider a trophy hunter. But I hunted near the Buffalo, WY area. I was also on a mulie/antelope combo hunt. From what I recall antelope in the low 70'" range, which is a nice (but not record) antelope were fairly common with a lot in the 60ish inch class. As for the mulies I saw quite a few - mostly doe. I did shoot a nice decent 4x4 on the first afternoon after a 5 hour stalk! The guide found him at about 8:30 in the morning on the opposite hillside and by the time we hiked over there and found him again it was about 1:15 in the afternoon. As luck would have it, as we were packing him out, close to the same spot where we were glassing in the morning was an even bigger buck! Antelope hunting is a blast. Just enjoy yourself and have fun. BTW I used a 270 Win for both critters.