For Charles as greater details.  Buffalo Arms lists .40-60 WCF as being out of inventory, but you can subscribe for notification once its back in stock.  They are licensed and insured for commercial loading and sales.  They are not cheap but they are licensed and insured and load quality loads in new brass (often reformed from more available sources).  You would be better served if unable to load yourself or with a knowledgeable person to help to use them.  When they make another run of loaded, black powder, .40-60 WCF, that is.  Tim

Concur with Tim.  The license isn’t the problem as much as the potential liability of the loader if your rifle should turn into a rapidly expanding cloud of sharp, high velocity pieces. For reasons entirely outside the loader’s control. 

If you should be only maimed and blinded, you could still take the witness stand (in the case brought by your wife against the loader for loss of consortium because you are too ugly, joined in by your minor children through their attorney ad litem for loss of support) and testify it was all your fault because you left a wad of cleaning patches in the bore. 

If you should be rendered brain-dead or incompetent, much less well and truly dead,  your testimony ain’t happening and the loader is up a gum tree with a jury unlikely to be fascinated by the technical niceties the loader says he observed while making up your cartridges. 

It doesn’t cost very much to get an ammo-making license from BATFE but I would guess the Holy Grail Insurance Company’s insurance premium would be attention-getting.