Well, I've continued to do a whole lot of reading since I 1st posted that question. It all stems from my inability [so far] to obtain a new supply of WW's.
The 1:10, or 10% tin/lead is 1# tin per 10 #'s of alloy. That is 2# of 50/50 tin/lead solder to 8#'s pure lead. Expected BHN is around 10 after aging.
However, I have hit upon another solution that may yield something akin to Lyman #2, BHN approx 16
This is 8# lead, 1# 50/50 tin/lead solder, 1# magnum shot [4-6% antimony + some arsenic].
This will come out somewhere around 90/5/5 of #2 alloy.
I have plenty of shot as I don't use magnum shot much, only for hunting loads. The 50/50 tin-lead solder is still readily available [though it is $6.25/#]. 22LR range lead I can get VERY cheap, and it yields approx 50% pure lead after cleaning it up.
When I get to make some of that alloy up, and test for BHN, I will post that.