Hardest one I’ve ever been part of was several years back a friend “killed” a 4 point in a place he couldn’t get a truck to. I won’t say it was up a railroad track but a railroad track may have been present. He shot the deer through the shoulders, it fell, he came back to camp for help(someone with a 4wheeler). I was back for lunch and had what he needed. Had lunch then went on down for retrieval. It’s been about an hour and a half plus at this point. We get to his deer to find it languishing but alive. Neither of us had brought a firearm. Only I had brought a pocket knife. So I grabbed its antlers and cut its throat on one side. Stepped away to let it die. Blood is spurting everywhere but ten minutes later the thing is still gurgling and trying to lift its head. Go back and ring it to the spine all the way around the throat. Step away and wait. Another 5-15 or so(it felt like an eternity) and all would get quiet then a deep breath and gurgle and the damn thing wouldn’t just die. We finally just grabbed it by the antlers and dragged it the 200 yards to the wheeler. It died somewhere on the way. At camp we opened him up. He’d been shot straight through what was a heart with a .270. Also only had 3 legs.