Trying to breathe new life into a Cape Gun, 16 ga - 6.5x70R and not having much luck locating 6.5x70R brass.
Bertram brass is listed as Out of Stock wherever they had it.
Wanting to buy 6.5x70R brass. 4,20 or 40 cases. Dies also.
If anyone might shed some ideas, it would be appreciated.
thank you,
outsidebear

Good luck, as it sounds like an interesting cartridge. I don't even find it in COW 17th edition.

This is a tough one. Buffalo Arms does at least list both brass (Bertram unformed) and dies (CH-4D) for 6,5x70R but both, as you noted, are out of stock and probably will remain so. There's no other cartridge you can use as a basis to make brass since the head diameter is only 9,0 mm (rim 10,6 mm) and the durn thing is so long.

Dixon's "European Sporting Cartridges" vol 1 lists it on page 75 with a bit of history - it was introduced around 1912 and was loaded by RWS, Roth, Hirtenberger, and Sellier & Bellot; the RWS and S&B until 1960.

Back in the '90s I worked with a drilling chambered for this round to create usable ammunition for its owner. The brass supplied was made by Wolfgang Romy in Germany and fortunately the barrel diameter was close enough to nominal .264" that bullets were not a problem. Cartridges literally looked like pencils.