I have read that after 20 days it will loss about 4 bhn for a hardness of 7-8 is this correct or is it harder when just cast?
I guess this means the alloy retains the same BHN ? But i seem to remember reading it gets softer with time, some where??. Lead-tin alloys, for example, may recrystailize immediately and completely at room temperature
That was a left-over ingot of WW cast about 10 years ago -- i.e., "aged" -- as was noted. Aging does soften antimony-lead alloys considerably over extended time, so that 8.9 was real.I dont think I've even heard of 9 BHN clip on WW.
I am loading a Uberti 1858 Remington revolver and am using a .45 conversion cylinder and am using a Lee 255 gr mold, when I cast using 1:20 or even 1:16 my bullets are in the 269 gr range using the 1:20 and 263 gr range using 1:16, I want softer bullets that weigh in around 255 gr and pure lead is to heavy for the molds I am using but if I can cast bullets using the 1:10 for a hardness of 11-12
and they will soften up to about a 8 bhn in a month it should work out great at my 750 fps velocity using 30 gr of KIK black powder.