Cool find. A couple years ago I inherited the contents of my Grandpa's old wood shed. While looking through stuff for a saw blade I came across and old (felt like 30lb) coffee tin of these things. I have no idea what they are but they're lead alright. I was pretty excited, there must have been about 500 in there. Now all I need is a shot maker and I'll be in business. Although I might be able to get away with slinging those things as is! Leave it to Grandpa's to collect the good stuff. Miss ya Pop.