neck turning
Once you have checked your brass for concentricity, and found it to be off, the next check on the neck is to check the neck walll thickness. If the neck is thicker on one side, make a mark on the shoulder there with a felt pen. You now set your neck turning tool to gently but firmly touch the neck on that low side. After cutting, check the thickness again. If you have set your tool correctly, you should be done. You may see spots that have not been cut on the low side.
Turning the neck without checking the actual thickness of the neck wall is not going to help a lot if you don't know how much to take off and where. Also, neck turning does nothing at all to help if the neck is just cockeyed due to the brass not shrinking back uniformly after firing.
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"If the enemy is in range, so are you." - Infantry Journal
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