Originally Posted by Ping Ping

If smoke is your complaint, look at lube and powder. However, your fouling problem is most likely due to your casting. If the bullet is too hard (24BHN) for the pressures you're using, it will cause fouling. Softer (18BHN) is better for pistol pressures and you will see a tremendous reduction in fouling. Not to mention an improvement in accuracy. I know this seems counter-intuitive to most, but the fact is that a harder bullet is harder to push through the bore and leaves behind more buisiness. The softer bullet conforms easier to the rifling/landing and deposits less material. Since it doesn't imbed itself as much in the pores and surface of the metal, it's also much easier to clean. However, you can go too soft aswell and see the same thing. It will still be easier to clean, but you'll get inordinate build-up. Figure out your pressure and choose the correct BHN range for that.

Hope this helps.