your choice is more than enough for antelope as long as you do your part a 500 meter shot will bring down a super trophy.
Here are a few sugestions, as stated they rarely run far before stopping to look back as long you don't chase them. But if you chase them they will run like the wind, 50 mph no problem. But, when they do look back a broad side lung shot will not usually be offered so, you will need to be patient to get 1. When they get to a fence they cannot jump it so look for a fence line with a 90 deg angle with the tell tail sign of wear trails under it, be patient and watch those areas.
I also agree with not letting the hair come in contact with the meat they do stink! And the flavour of sage is normal in the meat, sage is a major source of their diet
And pick a bullet that will hold together on impact, etip, barns, partition
But most of enjoy you hunt
Lots of good points on this topic, but what is really interesting to me is that antelope cannot jump? I never knew that and only assumed they could learn something new every day lightbulb