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Old December 7, 2012, 01:47 PM   #6
Brian Pfleuger
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Join Date: June 25, 2008
Location: Central, Southern NY, USA
Posts: 18,610
Quote:
The 20gr result was a bit odd. It had a hi value of 1277 ft/s and a lo value of 1040 ft/s and everything in between, hence the low average.
That's a chronograph error of some sort, I'd bet.

You should be at least 10, more like 15, feet from the chrony. 15 feet is pretty much "the" standard.
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