I myself use the .450 No.2 but don't feel it is that common. Unless others think it a lot different. I think only Bertram makes the cases except maybe now Horneber.

Soon to use the 9.3x74mm Rimmed. Not NE but in the same class.

Mickeys and NE450No2 lists are good. I would add the .375 Flanged.

Everyone/Anyone,

Keep them coming. I am seriously researching which calibres are the more common.