Unfortunately this seems to be an example of the annual "please give me information so that I can kill an antelope easily - just like on TV" that happens on every hunting site I have ever seen. Some fellows ask this same question on many different sites fishing for information, but rarely stay around to contribute themselves or to help others.
These quests for easy information are also made for elk and deer, but I believe the most I have seen are targeting antelope.
I am certainly not an expert on antelope hunting but try to help a fellow hunter out with what little I do know. I hope some of these guys stay around and pitch in to share their experiences with others too.