Anyone know anything about getting cast bullets to expand by heat treating so they can be driven fast and annealing just the nose so they can expand?

I've never done it but I wonder if setting the bullets in a tray of water leaving the nose above the water line and heating with one the heat guns, like those used for burning paint? Something similar to annealing case necks.
Jim

Arkypete, you won't get the nose hot enough. The very best bet for hunting is to start with a large meplat and don't worry about expansion. Unless of course, you are shooting a small caliber.

There is an article on the beartooth.com site, probably under Tech notes about heat treating to make soft nose boolits. It includes a lot of test info. I thought I had it bookmarked but don't see it. Interesting article. Worth the read.