I used to shoot the .264 140gr A-Max for deer and antelope. Once the ELD-X came out I switched over to it. It is a GREAT hunting bullet! The BC seems to be true out to 1,150 yards. I have taken 40+ antelope, 30+ whitetail and mule deer and 2 elk with this bullet. I have not had a single bullet failure or need for a second shot yet.
I am shooting these in a .260AI. Between the current and previous barrel I have shot over 3,300 of these bullets. I have a ton of confidence in the external ballistics of these and their game harvesting abilities! Buy with confidence.