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Old February 14, 2012, 10:17 PM   #10
Senior Member
Join Date: January 24, 2011
Posts: 1,146
Hercules in the 90's had data listed for the 32 ACP that had Herco as the slowest powder available.......I have the manual.

If you go with modern data, the best velocity I have seen from the online manuals shows AutoComp as tops.

I would also suggest you go with lead bullets just in case.
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