I have been deep cleaning my 56 year old reloading room and came across a couple 5lb rolls of Stearine Core Solder, AT 7241B. From what I found searching, it appears to be 35% Tin, 64% Lead and 1% Antinomy.
I have had this since my days in the telecommunications business, when lead sheathed cables were common. It was used for wiping splice closures on the lead cables. I am wondering if smelting this down for the tin will cause any issues when mixed in the lead pot and used to cast boolits.
I know Stearine is an acid, and if I remember correctly it was derived from the rendering of sheeps wool fat. Any one ever use this? Thanks. GJH