Extra cleaning time?
I shoot cast bullets in my .41 Magnums to 1,300 FPS with NO LEADING! I brush out the barrel with carb cleaner, run a couple of dry patches through it, and I'm done. With jacketed bullets, I have to let the barrel soak with Hoppe's Bench Rest to remove all the copper.
How do I do this? A little planning and forthought. First, I cast all my hi-vel bullets out of Lin-o-Type. Second, I moly coat using the NECO system (without the wax). Third, I lube with NRA formula beeswax/alox (Yes, I know that it is a sticky mess, BUT IT WORKS!). And fourth, I seat the bullet over a NECO P(ollypropolene) Wad (Which eliminates the melting of lead from the base of the bullet.)
The "Dangers" of lead poisoning from lead bullets is greatly overestimated. If you cast in a well ventelated area, you eliminate the dangers of inhaling let vapors. The most danger comes from ingesting lead from your fingers after handling lead bullets. This danger can be eliminated by doing what your mother told you to do; WASH YOUR HANDS!
Yr. Obt. Svnt.