This photo happens to contain a group also generated from a common parent cartridge. This group of chamberings happens to be a very popular Long Action family.
Can you tell us the parent chambering?
Can you identify the other members of this particular family pictured here along with the original?
Too easy, huh?
Perhaps another slightly tougher one in the near future. It's a bit time consuming going through all the ammo and finding them ya know...LOL.