Thanks for a lot of good information
So far I have just tried this bullet with my standard alloy,wheelweigts added 2%tin and 2%antimon.This alloy gives me hard bullets,too hard for this bullet I think.But the accuracy is good,under one inch at 25m.The load was 22gr Vitavouri N110-1408f/s from my 83/8" Smith 29.
Will try to cast with WW+2%tin.
Its not a bullet for mass production,it was tricy to make good ones,it took me 2hours to make 100 bullets the first time