I have a rifle chambered in .257 Weatherby Magnum, and no brass for it. Everywhere I checked online, the brass is out of stock - many show 'no backorder.' So, if I'm going to shoot this rifle any time soon, I'm going to have to form the brass. Does anyone have any suggestions on what to start with? Can this be formed from 7mm Rem Mag, or something similar? How involved is this going to be - neck down and fireform, or just what?
Any suggestions are appreciated!