"You can't use pure lead in handguns and modern rifles"
True, but you can use the pure lead to make a great alloy.
And there are many, many others. the tin and antimony are available at rotometals.
Rookie reloader, but learning fast
I load, 9mm Luger, .40, 38 S&W, .38 Special, .357, .45ACP, .45 Colt, .243 and 30-06