Back in the 70's and early 80's, Lead "Pipe" was very sought after for casting dead soft projectiles. I have, from time to time, seen an honest BHN of 5 with pipe. It is hard to find that nowadays, even with the high dollar stuff!
I haven't seen any for a long time, and I'm actually surprised to hear there is still some in the ground.
Good stuff, for sure.
If I recall, back when lead pipe was readily available, it created a tremendous amount of dross in the pot from the chemicals used in water treatment processes....best thing to flux the stuff with was a simple birthday cake candle, or a green stick.
When she flared up, you just light the smoke and it quickly settled down. Clean all the ugly off the top and it looked like a pot full of nice clean silver....ahhh, the good old days!
Congratulations on your find!
Uncle Russ...