Bryan, I have never shot an Antelope but I can definitely agree with you on always wanting a little overkill! I will relate my story about a buck I shot 2 years ago with my .243 and you can draw your own conclusions. My dad gave me an old Parker&Hale .243 right before he passed and it was a beautiful gun and shot well and I wanted to shoot a deer with it. It shot 100 grain core lokts pretty well (1 1/2-2 inches at 100 yards) and although not stellar is decent. I double lunged a nice East Texas eight point with it at 60 yards and it ran about 80 yards and was still alive by the time I could lower my climbing tree stand and walk over there. I still plan to hunt with this rifle but want a hotter load. Maybe a different bullet? Hope this helps your decision. Maybe I can learn from this thread also.

Try another bullet.. I aint the caliber.. I have never had a problem with my deer walking off.. Try the 85 BTHP from Federal..

Ah my friend, you state the obvious. That's what we are discussing on this thread.