The point is it should have been shot when the kid had a good shot or the guides and father should have finished him off immediately. The photo looks doctored and I'm not sure a kid could handle the recoil from a gun that big so who knows what really happened.A .50 cal round, even if it were from a muzzle loader, is plenty enough for an animal of that size. Poor marksmanship is at fault here, not choice of weapon.