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Old August 11, 2008, 03:07 PM   #13
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Join Date: May 22, 2007
Location: In the oak studded hills near Napa
Posts: 2,203
I really haven't shot my 5.5" Pietta '58 enough to know how good it might be yet, but I don't think it would hurt to check the land, groove and chamber dimensions.

Looks like you're running your chambers .0015" bigger than the grooves. So what might be the ideal dimensional difference between groove and chamber diameter?
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