Rip, I'll check my stock. I bought a bunch of 50BMG brass about 20 years ago and made trophies from much of it. Then I gave a lot to my instructor when he started reloading for his Barrett.
Ok, I checked. My 50BMG stock seemed to be wiped out... BUT apparently 6 cases sneaked over into my 20MM stock.
They are yours if you PM a mailing address. [+ up to 10 cases of the 20MM if you can use it.]