Try e-bay. Lots of old bullet molds show up there.

Hog Killer

What kind of money are we talking about? spending on an
old cast/mould

If ..!! you can't find one ...
are you still thinking about casting from a mould

The 41 long colt's a really nice old pistol..
I take it your's is a new one

It would make a really nice deer rifle handgun combo
Sweet.!