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Old August 29, 2012, 10:56 PM   #17
Nathan
Senior Member
 
Join Date: July 1, 2001
Posts: 6,285
With an even number of lands and grooves, calipers provide an educated guess. A slug would fine tune this to real knowledge in like 5 min.

or you could order 100 pcs of:
+0.000
+0.002
+0.004

but then you would wonder if the odds were better and order .001 and .003!

So, the $15 kit for slugging the bore gets lots cheaper.
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