Out in S. Dakota I made my first ever Texas Heart Shot. I hadn't intended it that way. The spooked group was heading up the other side of the wash, and slowing, and I had to wait for the buck to give me more than his wagging arse. When one of Elmer's "raking shots" opened up, I shot. I guess enough can happen in the third of a second it took my bullet (140-gr Ballistic Tip, 7-08) to cover 275 yards. He went DRT (down right there), both hind legs splayed uselessly behind. He wasn't gonna travel no mo!
I'd read about the shot, and how it'll drop an animal and afford the chance for a finishing shot. It sure worked that way for me. I don't anticipate making a practice of doing such a thing, but it's comforting to have it in my experience and confirmed.
