I have enjoyed reading about grown men "jonesing" for DG caliber rifles. I have heard of all theses calibers, most since I was a child: 416 Rigby, 450/400 NE, 404 Jeffry, 458 Lott, 505 Gibbs. There are also the many American dangerous game calibers, and I am sure many others. Of course I find the British calibers more romantic. I ask here: what is the most coveted / rarest caliber. Not necessarily the most coveted rifle, but caliber. Of course it might not be possible to separate the two. This is not a poll. I am just trying to better understand these magical calibers.