I am trying to stay out of these Alloy and Hardness posts but not doing a very good job!
The above is wrong by a wide margin. jsizemore I am not looking to have a fight.
Some things to keep in mind when talking about Pb and Sn, and then maybe Sb with additional trace metals.
-BHN's are dynamic.
-Rules of thumbs are not hard and fast
-Mixing 7bhn Tin into ratios of 4.5bhn Lead is not a linear math problem
-Home BHN testing units are subjective and some people are not very skilled
-Home testing units do not all agree in readout or charts values (which is a bit like buying 10 measuring tapes and some have different -length inches and feet)
-For our purposes (good news) we often have a window or range of hardness we can work in successfully.
Addressing the first post, guessing here, you want a 16-1 Pb-Sn pot of metal to try on a project.
This is a common BPCR metal and often recommended to help hold long unsupported bullet noses from slumping. It is a standard alloy with a standard cited hardness value and sold by Rotometals, John Walters and others.