Raimey,
I don't have the rifle "in hand", to measure the chamber; but I believe it is 6.5x55 Swede. It has marks consistent with that, and a rimless extractor(according to the link). As to why, I have no idea other than the customer wanted it. Since it is not marked Adolf, I don't know if it is one of his. He was a self promoter and would have likely had his name on it.
Mike

Last edited by Der Ami; 12/23/15 01:26 PM.