Meat, not to insult your intelligence, but a lead bullet is just that. A bullet made entirely of lead. A molten lead alloy is poured into a mould or lead wire is extruded into the shape of a bullet. If you saw a lead bullet, it would be obvious to you that it was a lead bullet. I don't believe that there are very many factory loaded cast lead bullets around. Especially not for auto pistols. You might encounter them if someone is selling reloads. I used to see a lot of them at indoor ranges that sold reloads, but even that is falling by the wayside since many indoor ranges are now concerned with airborne lead contamination. So why would anyone shoot cast lead bullets ? For reloaders, cast bullets are much cheaper to shoot than jacketed bullets. I usually pay about $17 for 500 cast bullets. You can also get ambitious if you are a reloader and actually cast your own bullets from wheelweights, linotype, plumbing lead mixed with tin and antimony. Casting your own bullets is time consuming, but it brings the cost of shooting down to almost nothing. I just thought I would expand on what lead bullets are. For the average shooter, there is little point in shooting lead bullets. For those reloaders that shot a lot, the cost savings is considerable.