I have read that reducing OAL in a bottle necked rifle round can increase pressure. I have also read that it can reduce pressure. I read a post here at the CF awhile back by John Barsness about OAL and pressure, but I can't find it. I also found this article by Barnes on OAL.
http://www.barnesbullets.com/resources/newsletters/september-2007-barnes-bullet-n/

So, I thought I would come here and ask the Gunwriters, does reducing OAL in a bottle-necked rifle round increase pressure, decrease pressure or have little or no affect?

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