Good Job--Congratulations!
My son Lincoln took the nilgai bull pictured below less than a month ago, also on the King. I think the pressure on native wildlife by nilgai and feral hogs has resulted in a decision to step up their non-native species harvest in a big way.
No good knife pics were forthcoming, but Lincoln did tell me his NMFBM came in handy when they happened upon what was left of a nice whitetail buck that had come to an inglorious end. He asked if he could salvage the head and was given permission. One swing of the big knife and the head was his. He was especially pleased with the surprised reaction of others in his party at the apparent ease with which he lopped it off. Of course, being 6 5 and 240 lbs. does give one leverage. Here's his bull:
Great bull picture and great NMFBM story!!