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Old January 28, 2013, 09:40 PM   #80
Senior Member
Join Date: March 31, 2010
Location: Communist State of IL.
Posts: 1,564
didn't the 180gr 40S&W duplicate the 10mm load the FBI developed?
No. 40 S&W comes close to the Light commercial 10mm loads but, nowhere near full power 10mm loads.

The FBI did not develop anything. They tested it with some wimpy limp wristed agents.

Jeff Cooper developed the 10mm.
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