Unknown lead help

[tomme boy]

I traded some range scrap brass for these 2 pieces of lead. He said they came from his grandfathers stash. He thought he remembers him saying they were practise heads for mortars. Any thoughts on what they are and what they are made of?
http://img.photobucket.com/albums/v21/tommeboy/101_0096.jpg

[tomme boy]

Also they are very hard. He said he used to melt them for sinkers.

[Dave C.]

Zink?

[tomme boy]

Its not zinc. It is hard, but not as hard as zinc. I'm thinking lino or mono.

[Bosshaug]

Looks like the standard 31 pound isotope core to me. They are sold here and other places for casting lead, similiar to COWW.

[Lizard333]

Looks like the standard 31 pound isotope core to me. They are sold here and other places for casting lead, similiar to COWW.

Yep. They should have a hole in the bottom. Great for boolits. 14-15 hardness from my experience. Good score.

[tomme boy]

Yes the hole in the picture is at the top. Goes almost all the way through it. If that is what they are, he said he has about 30 of these. He needs 223 brass and I have a bunch of it. I traded about 200 223's I picked up today for these.

I think I am going to put these in the corner for future use.

[runfiverun]

i'd take a stab at melting one or part of one, and pouring a couple of boolits.
if they look good i'd get after the rest.
if they are a bit hard i'd be after some soft lead later.

don't pass up a chance at a good quantity of consistent lead.



.

[tomme boy]

Nice thing is I have about 500 lbs of lead from telephone lines. Plus the girlfriends father has about 2000 lbs of virgin lino in pigs. I can have any of it whenever I need it.

I'm going to smelt one of these down and see how it is. Thanks.

[blackbike]

If it were me I`d trade for all those I could, and be real nice to my girl friend too!
bb

[Sasquatch-1]

If he is trading 223 for those grab as many as you can. 200 pieces of FREE range brass for $35.00 worth of lead is a NO BRAINER.

I bought four of those here once. They are a hard lead and they are easily stored until needed. Now you will need a way to melt them if you dont have a large pot and a heat source.

I believe they are used to ship the syringes that contain the radioactive isotpe used in nuclear stress test.

[sqlbullet]

Moly-99 medical isotope cores is certainly the first thing that came to my mind when I saw them:

http://fellingfamily.net/isolead/core.JPG

If that is what they are, then these are going to many years older than what we see here nowdays. However, if they are moly-99 cores, they should be 96/3/1 lead/antimony/tin. Water dropped they should be very hard at about 24-25. Air cooled they should be 10-11.

[imashooter2]

They look a lot smaller than the isotope cores. Look at the candy and mug in the background of his picture...