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Old 3rd October 2013, 11:08 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: 2,331

I don't think I'm explaining this too well here. There's plenty of accredited published papers on the subject just a google search away.
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