very nice BB my guess on the length is 19.5 and 19.25
I believe your grossly underestimating the length on this BlackBuck. That's an outstanding trophy for sure. I'm gonna guess around 22". Hell of a buck!!!!!
I agree on his being low, and think yours is as well. I have a 20" Blackbuck and his buck is way bigger, pushing 30" I say. It is huge.