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Rkutcher · February 23, 2013, 12:21 PM

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.

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.