Thread: Mann Device
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Old 02-04-2012, 07:24 PM
AFBerryfarmer AFBerryfarmer is offline
Join Date: Sep 2011
Location: Mossy Head, Fl
Posts: 791

They were used to test ammo lots for accuracy. I don't know a lot of the details but this info might help you broaden your search. Good luck.
Larry Bizek
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