Bill
I don't know the exact alloy. It's very hard. When I found it at the scrap yard, I rapped it with my pocket knife and it rang like a bell.
I used it orginally in my 375 Whelen. It worked like a charm. There's very little reloading data available for the 375 so I used 35 Whelen data as a starting load.
For the 45-70 and 405 I used a more diluted mix of two ingots in a 20 pound pot of wheel weights.
The bullet is sized to .413, lubed with LBT, annealed 416 gas check.
Jim
Thought I'd add:
The closest alloy I could find would be Rotometals Copper Hard.
Last edited by arkypete; 07/17/10.
