I've taken cast bullets and dissolved the wax lube out of them with mineral spirits, let them dry, and re-lubed with liquid Alox. Much less smoke. No leading issues.
Next time I order bullets I'm going to request non-lubed.
All the Best,
10th Amendment -
The powers not delegated to the United States by the Constitution, nor prohibited by it to the States, are reserved to the States respectively, or to the people.