Keel is likely in the 800-900 lb area and would push my lead reserves to about 2 tonneIf it is lead it doesn't really matter what the alloy is, you can make bullets from it. Not that many things get mixed in with lead. Antimony and tin are most common ones for the historical uses of lead. Makes it a really good bet that what you have is a lot of bullets after a lot of work. After all even Lyman #2 is 90% lead so even plain soft lead gets you 90% of the way to Lyman #2
I might mention there is a member that sells some really nice cast boolit and redneck gold embossed molds. Allows one to cast 10 pounds in 4 ingots with each fill. I bought some in order to clean up all my scrap into ingots of known alloy. I was doing 110 lb. batches so the capacity and good stacking made the molds worthwhile. In the past I used bread loaf pans from Salvation Army or garage and estate sales for bulk lead storage. Filled about an inch they make nice slab ingots that will stack and weigh between 10 - 12 pounds. Too big to fit in pot though, harder to use to blend into some other alloy. Could only make big batches and couldn't easily fine tune things to get say a 60/40 mix of two batches.
You have your work cut out but I'm betting you will really like sitting back and looking at a nice stack of completed ingots. I seem to recall enjoying very much sitting in a chair sipping coffee and gazing at this lovely stack of Wheel Weights. Don't know your keel size but would guess it would be a good deal more than this, which as I recall was around 300 to 400 pounds. Gotta love those Harbor Freight furniture moving dolly's. It may not be really "portable" but I can move it around the garage and it sits on floor under a shelf where I can roll it out as needed. Has a board under the ingots with a rope so I don't have to bend down to move it. Bending is NOT one of my strong suits.
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