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Old 11-22-2012, 23:39   #21
intecooler
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Join Date: Nov 2012
Posts: 631
F1 Chrony about 10 feet from the muzzle. 5 shots on a normal 70 degree day. It was 1546 average... did them a while back. Buy a box and see!

https://docs.google.com/spreadsheet/...0ZVMybFE#gid=0
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