20-1 recepie

[mustanggt]

I've done some searches here to find a recepie for 20-1 but haven't found anything. I've got pure lead and 60/40 tin/lead solder. Any help is appreciated. Thanks

[obssd1958]

Here is a resource where you can find the answer to just about any alloy question:

http://www.lasc.us/CastBulletAlloy.htm

I hope this helps!!


Don

[littlejack]

mustanggt:
I use the 20-1 alloy in my 45-70.
It just amounts to 20 pounds of pure lead, and 1 pound of tin.
I used to use the 60/40 tin lead solder. I did not even try to figure the 20-1 mix exactly.
Just use 20 pounds of pure lead and 1 1/2 - 1 3/4 pounds of 60/40 solder. That will get you so
close, that there will not be any significant difference.
One of our mathamaticians will probably show up and figure it to the gnats eye-brow.
Jack

[montana_charlie]

If you consider 20:1 alloy as twenty pounds of lead to one pound of tin, this is how I would make it using 60/40 solder.

One pound of 60/40 only yields .6 pounds of tin.
So, I would use two pounds of solder.
That yields 1.2 pounds of tin and .8 pounds of lead.

Multiply the tin by twenty.
1.2 x 20 = 24 pounds of lead.

There is already .8 pounds of lead in the solder, so subtract that amount from 24.
24 - .8 = 23.2 pounds of pure lead needed to make 25.2 pounds of 20:1 alloy.

Instead of just giving you the answer, "I have taught a man to fish" ... I hope.

CM

[semtav]

Like CM . I cut my 60-40 in chunks and figure from there. Just weigh the chunk, figure out how much of it is tin, and how much is lead. add 20 times as much lead as tin in it minus the little amount already in.

[mustanggt]

Excellent replies. Thanks fellas.