Mike, as usual, you are right! First there was the BBF in combination with the DG barrels 12/70. Later he let make a set of DR barrels in 9,3 x 74R. BTW, this is not fitting right any longer. I presume because my friend hasn`t shot with it since 20 years or so. But he shot with the BBF. Do you think this is possible? The barrels do not shut complete.
Wolfgang