You really shouldn't be getting much leading if your load is OK. If you've got a little leading, you can most easily remove it by getting a bore brush for a 38 special and wrapping it with bronze wool (available from brownells). Wrap it until it's snug in the bore. Work it back and forth. It will have the lead out quicker than anything else I know of. It works best if you clean the powder fouling out of the bore first, then dry the bore. Use the bronze wool swab dry for quickest results. Bronze wool won't scratch your bore. Some recommend doing the same with a kitchen cleaning pad called Chore Girl, but I haven't seen that product here. It's available at supermarkets in the same place as steel wool. I have seen others recommend using fine steel wool for this, but I want a softer metal so I don't get the scratching.
If you're getting a lot of leading, you're probably making loads in what I call "the zone of death". This range of velocities creates the most fouling, and goes from about 950fps to 1100fps with commercial hard cast bullets. The leading happens because the bullet doesn't seal in the bore and the gas blows by it.
I suggest working on this problem. It's worth it because it will give you good loads and save you money in the long run.
The Speer FMJs are popular with silhouette shooters because they're great on steel targets, and are very accurate.
