Griz44
Member
OK, I got a batch of lead that all indications show it needs some more tin in it to reduce surface tension enough to make the nice purty boolits I am used to seeing drop out of my molds. There is a mom and pop hardware store near the house, so I ran down there to grab some tin (in 95/5 solder form) Upon arriving, I discovered that they had none, but did have an Alpha metals product that is 95% tin, 1% silver and 4% copper. I shoot very soft alloy anyway, so the antimony (or lack thereof) is not an issue. The tin content is fine, the silver is a non-issue. What will the copper do to the castibility and subsequent hardness?