I'm finding the suggestions interesting. The only input I may have would be on your cast bullet. Wheel weights and linotype at 50/50 would be a pretty hard bullet. Probably no expansion, per se but maybe shattering if you hit bone. I think pure wheel weights or even wheelweights cut about 4 to 1 with pure and velocity kept at 2,000 fps or less should work quite well.
Good Luck,
Rick
