I think the buck BuzzH posted is a few inches bigger than the buck in the picture . . . Mid to high 70's . . .
Buzz is right when he says antelope can hide a few inches here and there. The first picture shows that "round mass" around the bases pretty well, but in the second picture he looks a big skinny. I agree with Buzz's mass measurements, not above 7" on the base.
That said, you'd have to pry the rifle out of my hands if it were me . . .