Thread: lead hardness
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Old October 23, 2011, 02:31 PM   #15
dagger dog
Join Date: September 5, 2010
Posts: 63
I have the Lee hardness tester, after some time learning the how to use it, I have found most clip on type wheel weights will test out at 13-13.5 Brinell.

Using the chart that came with the test unit it puts the pressure range for 12-13.4 Brinell roughly between 16000-17000 psi , Well within the range of most 38 Special loads, with a good lube and water quenching you might push them into the +P range.

9MM Luger loading pressures run into 30000 PSI and higher and could cause leading problems with straight clip on wheel weight bullets, adding tin,
lino type or heat treating can make them quite harder.
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