OP asked about deer and antelope with the .223...answer is Yep! 53 gr TSX again....
Do you really expect us to believe you killed a deer while wearing blue jeans and using a .223 that isn't AI'd? I read on this forum that it isn't possible.
He who joyfully marches in rank and file has already earned my contempt. He has been given a large brain by mistake, since for him the spinal cord would suffice.