This powerful round was only chambered in the Winchester Model 71, although some Browning reproductions were made. It is also used to form the 50 Alaskan cartridge by simply expanding the neck to 50 calibre and then fireforming it in the rifle chamber. While made by Bertram the headstamp is different. This brass is packaged in lots of 20. Shipping weight is 325 g/20 cases.