How hard is my alloy

[awaveritt]

I've cast about 350 boolits for my 9mm (Lee TL-356-124-2R) from an alloy that contains the following:

60% clip-on ww
40% Pb
2% tin

Since I do not have access to a BHN tool, can anyone hazard a guess as to the BHN number of my alloy?

I have both clip-on ww ingots and pure Pb ingots and settled on this ratio to run out at about the same time. These will be used over 3.5 to 4.0 grains of Bullseye.

[Calamity Jake]

Somewhere between 8 and 12 I would think. And that is hard enough for your 9 mil if it fits the throat/bore.

[BABore]

You should be about 9-11 air cooled and 19-23 water dropped. Alot of this will depend on your WW's. They vary by region and date of mfg.

[lylejb]

I'm using 2/3 WW (clip on) 1/3 "pure" (stick on ww) + 2% tin (95% tin / 5% antimony solder), air cooled and my boolits test at BHN 10

Mine are Lee 358-158-RF for 38 special / 357 mag. Have loaded up to mid 357 velocity, about 1200 i think, with no problems. Could and will go higher, just haven't yet. I don't get as much range time as I would like.

As Jake said, that should be fine in a 9MM as long as the boolit fits correctly. Correct fit is more important that having any specific hardness.

[hiram]

11-13