I shot this one and later a doe antelope with my trusty XP-100 .284. Had to follow a large group with the biggest buck I've ever seen, probably 18-19" about a mile or so. They stayed just out of range with a strong crosswind that kept me from trying a shot at that record buck. I squeezed 15 ounces out of a one pound trigger several times, I wanted that buck badly.
The group I was stalking stayed on a slow (for pronghorn) and steady move as I was trying to get the wind directly in my face. This herd then walked right into an even larger herd of about 80 goats.
I belly crawled 150 yards finally getting the wind straight inline with my nose, eased the bipod legs down and the big buck decided it was time to get out of there. He separated his herd from the other and didn't stop as they disappeared over the horizon.
The second herd had several good bucks in it with one extra wide heavy horned buck. This buck became my target of interest after losing all hope of killing the record buck.
I had gotten a reading with the lazer rangefinder on the herd when they were all bunched up and knew the wide horned buck was about 450 yards away, the outer limit of my confidence. I waited a couple of minutes as the antelope became increasingly nervous and moved away from the buck I was after. I held over what I thought was needed and squeezed the trigger. The pistol fired and about a second and a half later I heard the bullet slap the buck. He took one step and fell.
I tried to range the downed buck with the rangefinder, but there was not enough to bounce a signal back. I took a 100 paces toward the buck and tried again. It read 346 yards.
The 150 grain Ballistic Tip entered the right shoulder and exited between the first and second rib behind the left shoulder. The jacket and core separated with the core exiting.
It took two hours to drag the buck back to were we could get the truck to it. Wore all the hair and most of the hide off one side. Almost forgot, had to cross a river too.
I took a big doe the next day. 187 yard shot and a little over half a mile drag.