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DESCRIPTION

Accu-Ring Cross Bolt Die Lock Ring (Anodized and Laser Marked)
by Forster

Midsouth now carries the new Forster Accu-Ring. The Accu-Ring makes setting up your Sizing Die easier by giving you reference marks in thousandth of an inch increments (.001"). To use these reference marks, simply use a fine marker to put a point of reference line on your die. Turn the die clockwise to increase the amount of shoulder bump or counterclockwise to decrease the shoulder bump (i.e. increase case's headspace length).

There are many other factors that could influence the final amount of shoulder bump during sizing. Ductility of the brass or springback, type of case lube used, pulling an expander ball through the neck and the amount of slack in the linkage of your reloading press are a few things that cause variation in shoulder bump of sized cases. The reference marks on your lock ring will help you to zero in on what you want the headspace length of your cases to be.

Remember to lockup the Accu-Ring completely after you make an adjustment before you size a case again. Otherwise you will obtain inconsistent results if the ring is not tightened.

Another use is for non-micrometer seating dies, instead of guessing with your seating stem, you can make fine adjustments to your seating depths using the Accu-Ring.

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