I was able to get my first ever antelope in 18 also on Sunday. Hunted hard on Saturday in some nasty weather but had no luck.
Sunday Morning I pulled off the road along a decent chunk of BLM/WY land. Hills ran parallel to the road so I climbed up and as I peaked over, I saw 4 antelope about a mile off leaving a pond. Quick check on OnX says they're public. Let's go!
I drop down and begin to make my way towards them. I peak over to check and don't see them. No big deal. I start to drop back and I see an antelope skyline'd 600yds from me on top of the highest hill. I freeze. We stare for 2 min or so and he trots off.
When I get around that big hill I spotted the skyline'd goat I see a couple antelope feeding in a valley. Un-alarmed. I close the distance while slowly checking their position. I got my spotting scope on them, watching 4 antelope when the whole herd comes into view. 15 does/fawns, 1 buck.
I crawled as far as I could without being spotting (shoutout to sitka w/ the built in knee and elbow pads)
I range various hill sides. 275, 330, etc.
They take the close hill/valley. I am looking down my score watching them one by one. They give me a full body view for a second or two. The buck was last. As soon as he steps into my crosshairs I squeeze off.
Instantly I thought I shot too fast. I bolted and looked back to see a white belly. The buck didn't take a step.