RE: wyoming antelope, unit 23
Then let me emphasize sighting in once you get to Wyoming. Your shots can easily be off, even "knowing your guns balistics". Horor story: I once guded a fellow from Penn that was insulted when I suggested shooting some paper the first day. "I've been shooting this gun for months on my property and I load my own and know this gun and all it will do!"
He missed several times at VERY decent lopes before taking my advice.
One more thing . . . don't shoot one that is running, they will taste bad.