January 7, 2013, 09:10 AM
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#6
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Senior Member
Join Date: October 25, 2001
Location: Alabama
Posts: 18,541
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For some values of "available" you could consider the 4mm Zimmerstutzen.
http://www.pyramydair.com/article/Zi...bruary_2011/82
http://www.iss-internationalshooters...df/4mmzimm.pdf
It was used for indoor target shooting before precision air rifles were made.
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