Hi all, my phone won't open the alloy calculator so I am hoping some of the good folks here can help. I bought 25lbs of super hard from roto metals and want to garden some of my soft lead. How much super hard would I need to bring my 8bhn lead to around 10.5-11bhn? I prefer to harden my lead for my pistols in big batches as I shoot them more thsn my rifles. Thx for any help.