50/50 or not ?

[fourdollarbill]

I bought a large amount of lead alloy from an estate sale and found a uniformity to it. WW's ingots, pure lead ingot, bars of 50/50 and then I have have 15 little ingots about 2.25" round and 1/4" tall that look like the 50/50 solder in color. I'm assuming the guy made these pucks out of the 50/50 and used it presized in a recipe. Is there a way to tell if it is 50/50 for sure?

[lwknight]

Specific gravity test. If it is 50/50 the SG will be 8.88
This spreadsheet will help. You can change the values in the top row to your needs.
I guess if you wanted to you could extend the sheet to cover oll ratios of mixture.

http://castboolits.gunloads.com/attachment.php?attachmentid=18225&d=1261865841