The man was co-owner of a large plantation across the river from me, in SC, back in the mid-80s. I was good friends with his plantation manager. He asked my wife and I over for a "pig pickin' supper party on evening. I met Billy there. While waiting for supper to be finished the menfolk were talking about hunting, and stuff in general. My good friend knew of my distaste for house cats and mentioned to his boss that he and I shared a common interest in cats. That's when the manager related the tale to me. It may have been embellished, but I didn't question the veracity of my host. He most likely picked the cat up by it's neck and threw it over into the shrubbery, but it was told as having "wrung it's neck". I can't prove it either way.
I only was around Billy about three times. He was always very gracious to me, inviting me on dove and quail hunts. I consider someone who treats me with such generosity my friend. Close friends? ..... nah.