I want to try 20/1 and 30/1 in my 38-55 with a 380 bore:
The tin in my alloy stash is from babbitt, mixed 50/50 by weight with pure lead, so it contains some Sb. Therefore my 20/1 mix will have app 1/4% Sb. I don't think that small amount will make any difference?
I'm new to cast bullets and the whole smelting thing. When I smelt, and flux, I can't seem to see the difference between "dross" and "valuable alloy". When I stir I see little things swimming just below the surface, when all is still again a skin forms but it looks like a thin sheet of tin, somewhat dull, but metallic. I somehow think it is tin forming because of the near freezing temperature wind that is ventilating my work area. When I pour the melt into ingots, I can see the skin on the surface, and it is dull. I flux with beeswax.
My bad, a picture sure would help.