Lead free solder, good for boolits?

[technojock]

I have a couple rolls of lead free solder that I don't recall where I got them from. Neither of them has a break down of the alloy. The one roll I find the most interesting is labeled silver bearing solder. The brand is Kester and there's no product number on the spool but it does mention it's for potable drinking water connections. The only useful info on the Kester site says the US plumbing standard is 95% tin and 5% silver.

While I have no shortage of tin bars for hardening up my boolit alloy, I'm wondering if this would be OK to use for that purpose. I'm thinking I acquired it long before I got the 12 or so pounds of pure tin bars that I have...

I have another roll that's lead free rosin core and most likely for electrical use but the label is so dirty on that roll that it's mostly unreadable.

Tony

[winelover]

I use lead free solder for making 20-1 alloy. One (1#) spool to twenty pounds of pure lead. Can't get any easier than that, math wise.

Winelover

[Sasquatch-1]

95% tin or more. I would use for bullet fill out. It should work the same as pewter. Add a little until you get good fill out after making sure it's not something else like dirty mold or too low heat.

[Winger Ed.]

Unless you have some real odd ball stuff, it's 95/5 solder the Plumbers use now for Copper water lines.

I use it as a Tin source.

In the old days, a one pound roll was about $10 bucks.
That same roll is $35. now.

[Green Frog]

When I am loading my specific bullets for Schuetzen (especially bench events) I carefully mix my alloy for the job with components as pure as I can find. That lead free solder would be just the ticket for the tin component… the tiny copper/other content would be negligible.
If you are casting with true COWWs, a % or two of that solder by weight will make the mix flow and full well.
Froggie

[BJung]

Does lead free solder cast good hunting bullets?

[Jeffrey]

By itself: no. Alloyed (2%) with lead (96%) and antimony (2%): yes.

[technojock]

Thanks guy. I have a fork lift ballast plate I plan to smelt down soon. I'll toss that in the mix for sure. I also have half a bucket of WW's that I plan to smelt down at the same time. Unfortunately I have to wait for my grandson to help me since my back won't let me lift that much any more...

Tony