Awhile ago I bought some reloading stuff from a guy that his father past away. His father was into guns and reloading, he kept all the guns but wasn’t interested in the reloading. So anyway in the stuff I got there was 2 ingots labeled EXTRA WIPING SOLDER. I looked around and couldn’t find anything so I’d thought I would ask you guys. I know there is a lot of knowledge here. So if anyone can shed some light on this mystery ingot I’d appreciate it