ole_270
06-23-2017, 03:05 PM
I sent some samples to BNE the other day, turns out the #4 Babbit bars I had weren't ASTM #4 like I had hoped. 2.6%Sn, 5.3%Sb is a long way from #4 Tin based babbit.
I had 4 different alloys I had mixed over the years and finally got confirmation of what they really contained. I mixed them all together, 4 ingots of this one, 3 of that one, and 2 each of those two, plus some tin, in 60 lb batches and ended up with 300 lbs of what should be real close to 1.45%Sn, 2.9%Sb and the rest Pb according to the alloy calculator. Should be a pretty good base alloy(calculator shows 11.7 Bhn), especially since most of my shooting is a 25-20WCF and a 38-55, both plain based and most loads run 12-1500fps. Should harden by water dropping if I decide to push the velocity in the 308. Now I've added a 45ACP, so with a little soft lead it will work well.
I've still got WW, Lino and two different types of lead based babbit, guess I better get off my duff and find some soft lead to go with it all.
I had 4 different alloys I had mixed over the years and finally got confirmation of what they really contained. I mixed them all together, 4 ingots of this one, 3 of that one, and 2 each of those two, plus some tin, in 60 lb batches and ended up with 300 lbs of what should be real close to 1.45%Sn, 2.9%Sb and the rest Pb according to the alloy calculator. Should be a pretty good base alloy(calculator shows 11.7 Bhn), especially since most of my shooting is a 25-20WCF and a 38-55, both plain based and most loads run 12-1500fps. Should harden by water dropping if I decide to push the velocity in the 308. Now I've added a 45ACP, so with a little soft lead it will work well.
I've still got WW, Lino and two different types of lead based babbit, guess I better get off my duff and find some soft lead to go with it all.