Guys, I know this is a slow fourm so I know that you've all read the Hawk bullet thread just below. Go to
http://longrangehunting.com/ubbthreads/ubbthreads.php and search for Richard Graves or Wildcat Bullets if you think I'm full of it. The man himself offered to make bullets just for your application, and he often mails out test samples FOR FREE! And you say you will have to WAIT until some manufacturer somewhere makes something suitable? Amazing.
I guess if the horse isn't thirsty enough and wont drink then you may as well let him find the water on his own.