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Old February 23, 2013, 12:21 PM   #1
Rkutcher
Junior Member
 
Join Date: February 11, 2013
Posts: 3
C.0.A.L variations

I have a rcbs rockchuck press and dies and am noticing some inconsistencies with my C.O.A.L. I am getting a margin of error of plus or minus .0015. This leads to a difference of .003 at the extreme.
I am measuring from the ogive so it shouldn't be a variation in bullet tips.

What I am wondering is.. Is this normal and if not what are some possible causes? I am certain the die lock nut is tight.
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