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Old January 25, 2012, 09:25 AM   #8
Senior Member
Join Date: June 17, 2010
Location: Virginia
Posts: 4,713
suggested using a wooden dowel down the bore to gently work the bullet back and forth
to truly find the depth. Any thoughts on this?
Wooden dowels that small in diameter tend to "not be straight" (that's an understatement)

I use a cleaning rod with a flat tipped jag (or whatever closes the thread hole) to
work the bullet back and forth very gently so it juuuust kisses the lands, and
then take a reading. (If you actually press into the lands to any degree, readings can
vary wildly). The right feel is an art, but you pick it up quickly.

I do 5 bullets 3-5 times each and take an average across the lot. Usually that gives me
a number ± 2-thou or so -- more than accurate enough. (Don't get too anal.)
mehavey is offline  
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