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Old 30th September 2013, 12:27 PM
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Brian.Samson Brian.Samson is offline
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Join Date: Jun 2009
Member of: Pontefract, Doncaster Airgun Range
Location: Doncaster
Posts: 2,322

I'm using 1 chrono and moving it downrange. So you can't compare shot 1 at the muzzle with shot 1 downrange and get an accurate BC figure - When I'm quoting BC's I'm going with the average MV against the average downrange.

Not a great way to do things, but for what I'm trying to test it doesn't matter too much. It was less hassle than calibrating my combro against my pro-chrono and then trusting that taking a shot with the combro fitted wouldn't alter my poi ( and cause me to hit my pro-chrono )

I'm not really trying to measure BC accurately, just demonstrate that consistency at the muzzle doesn't necessarily mean consistency downrange really.

Not really laboratory conditions I know, but hopefully better than our usual subjective tests
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