I have cast a few bullets. I'm no expert, so I won't offer any advice along those lines except to say...
BE ABSOLUTELY CERTAIN YOU DO THIS ONLY IN A WELL-VENTILATED AREA. LEAD POISONING IS NO JOKE!
Now, for the "DAMHIKT" part - my brother used to cast LOTS of bullets...in his garage...and shoot indoor gallery pistol...and handle many bullets in reloading. His lead levels rose severely. No question that it wasn't the bullet casting alone that did it, but in this case, every little bit hurts.