There is a shot called NICE shot , sold by Balistic Products
If you reload lead or know a buddy that dose
You can use Nice Shot instead of the lead
You just have to use a load that runs less than 10K pressures
As the Nice shot raises the pressure about 1 K
Not real cheap
But it is suposed to be lots better than Bismuth
If you don't reload
Email Balistic Products
As I remember reading , someone is loading it for sale
John