With the correct size, hardness, lube and barrel prep you really should not have to clean much lead out of your barrel. Try the cast bullit forum for a lot of tips. All of these things are critical, but one that is over looked the most is matching hardness to the pressure and not velocity. Velocity can vary greatly with the same pressure. You can read more about it starting with the Lee manual. If you are buying store bought bullets with hard lube and have no idea what hardness they are you can tumble lube them with Alox and reduce leading some. But for no leading and top accuracy all the former things mentioned must be applied.