I finally think I have found some usable metal at a local thrift shop. I found a decent sized decanter (I think that's what you'd call it), probably weighs 1/4 lb. It is easily bendable by hand. On the bottom it says "TINN NORGE E23". I guessing this would be Norweigian tin? I'm going to weigh it once I get a decent scale and start alloying it with some stick-on WW ingots I made. They are really soft, easily scratched with a fingernail. I just need to weigh everything out so I get my alloy right. I'm not really sure what how much tin I should add to the ingots to make useable bullets for my .45 ACP, velocity around 750-800 fps.
Oh, I paid $1.70 for it, by the way.