I punch my own for my 1851 Navy, but not for the .50 yet.
For the .44, I took a .45 colt brass case and drilled out the primer pocket, attached one of the mandrels for my dremel, and sharpened the mouth of the case. I attach the jury rigged contraption to my dremel and fly through a piece of felt, making perfectly round .452 wads , perfect for stuffing over the powder in a revolver. I can get a hundred done in a few minutes.