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Old November 1st, 2006, 09:03   #6
Join Date: Mar 2005
Location: MB
FWIW I understand that Guarder BBs are slightly oversize and are specifically NOT for use in 6.01mm tightbores because there is a high likelihood they will jam. They may even not be for tightbores period, never used them myself so I don't recall. It's an interesting concept though, rather than constricting your bore you oversize your BB and achieve the same result.
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