I sent some alloy samples off to get tested. I received a few of the results, and I'm pleased.
First, I used the alloy calculator devised by one of the members here to mix up some of what should have been Lyman #2. I used CWW, SWW, Linotype purchased from the classified here, and some pewter found in the wild.
Aiming for - 90% Pb, 5% Sb, 5% Sn.
Resulting mix - 90% Pb, 5.2% Sb, 4.8% Sn.
Dang close, I'd say.
Second, when I found a pile of plumbing lead at the scrap yard, I purchased all of it. I don't remember how much, 250 pounds or so.
Before rendering it down, I trimmed all the joints close, to try and save the tin from being diluted to nothing. I rendered all the joints separately, but didn't know what I had. I just marked it TRPL (Tin Rich Plumbing Lead), and set it aside.
Aiming for - unknown, just want the tin.
Result mix - 95% Pb, 5% Sn
Well, whadya know !
5% tin ! I made 20-1 (19-1 actually) without even knowing it ! I've got about 35 pounds of it too !
Very pleased with the results so far. More coming in a few days....