Speer Manual - 357sig Data Inquiry
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February 10, 2013, 06:41 PM
Join Date: June 25, 2008
Location: Central, Southern NY, USA
22.5gr case capacity would be almost impossibly high.
I have cases head stamped GFL, Winchester and Speer, with some nickel and mostly brass. The highest capacity I've ever measured is 19.7gr.
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