Kroil. I kept reading great things about it over at
www.castboolits.gunloads.com so I had to try it. It works, I purchased a couple cans from
http://www.kanolabs.com/ and in about a week I had it in hand. I sprayed a couple molds that were hanging onto the bullets. I let it soak for a few hours and then began casting. The bullets dropped right out.