So I was almost right. The cape looked very whitetail to me, and it is.
I was looking at the ears, and they are whitetail all the way. I have seen a few pics of hybrids and your cape had whitetail ears and lacked the batman forehead of mulies. Therefore, I guessed mulie horns on a whitetail cape. The brisket line looks alot different to me at work, on a CRT screen. I think those horns are awesome! Are they not rare to have such huge hybrid horns? I read somewhere that hybrids normally don't live very long because they get confused between the different survival instincts of the two species. I also read that they stumble and have an awkward gait. I don't know firsthand, could be "wives tales".