On the lead-free solders, usually tin is the only ingredient... sometimes a touch of silver is added. Tin is listed as "Sn", and silver is listed as "Ag", or sometimes "Sil". So you will usually see something like "Sn 98% Sil 2%" on the label.
Silver will not hurt your bullet alloy at all... the Lone Ranger HIGHLY recommends it.
As a bonus, you'll be prepared for any vampire or werewolf attacks. Zombies? You're on your own
