I picked up a couple of boxes of .300 Dakota loaded ammunition from Hendershot's back in Sept 2022. At the time, they offered to sell me just the brass. They currently offer ammunition, and possibly just brass (?), for the 7mm Dakota as well. It won't be cheap (looks like the price/box has gone up another $20 or so since then)!
I went ahead and ordered their Extreme Custom Ammunition instead of just the brass (my rifle seems to prefer 180 gr Accubonds, and, at the time, I couldn't find them either, let alone a steady supply of primers, but I was able to order their custom ammunition with Accubonds).
I figured worst case scenario was that their ammunition wouldn't shoot well through my rifle (a good probability, but I haven't yet shot any of it), in which case I could just pull the bullets, dump the powder, and fill the case with my "pet load" powder, working back up to a charge that duplicates performance from brass I'm currently using.
Last edited by rabst; 01/08/24.