....is something I have the basic equipment for, but haven't done yet. The main reason is that lead bullets ("boolits") have to be speed controlled unless you crimp on a copper Gas Check, or else the hot powder burns lead onto the bore, and this can happen in just a few rounds. This limits lead bullet usefulness to practice and target shooting, for the most part. Generally, you don't want your lead bullets going over 1,000 fps. Most boolit people have some Sooper Secrit lube that they they somehow get to stick to the lead boolit (soaking it on, baking it on, squishing it on under pressure), and various claims are made that (whatever) lube cuts down barrel leading or even prevents it entirely. I am SOOOO skeptical, sorry, and I have the barrel-scrubbing calluses to prove it.
Leading is a factor of lead alloy hardness (Brinell), heat of the powder flame and speed of the bullet after ignition of the primer and powder. Leading occurs by flame-cutting of the base of the lead boolit by the powder burning, or by smearing of the sides of the lead boolit in the bore as it travels from the chamber to the muzzle, or a combo of both types (the usual case). The general solution is to go to bullets with copper skins, either plating or actual copper jackets which the lead cores are swaged (pressed) into. Those are expensive, running 1/2 again as much to 2 1/2 times as much as a cast lead boolit bought outright, or four times as much as one cast at home. Even more expensive is the all-copper bullet.
Along comes a new anti-leading process entirely. Not a lube of any kind. POWDER COATING!
Read this and think on it.
Bears looking into, doesn't it?