Difficult extraction of unfired rifle cartridges

Sep 29th, 2016

If you are having problems with a semi-automatic firearm feeding and extracting bottle necked ammunition, like .223 or .308, you may need to reset your sizing die by using one of our headspace gauges. 

For use in a semi-automatic rifle, a sized, lube-free case should drop in flush with the lower step on a Dillon Precision headspace gauge. The lower step is minimum headspace. A factory round should drop in that far as well.

If the size die is not pushing the case shoulder down to the minimum specification. It may be necessary to turn the die down an additional 1/4-1/2 turn beyond the point where the bottom of the die contacts the top of the shellplate. Rely on the gauge to tell you when the size die is correctly adjusted.

For more information on the proper use of a Dillon Precision Headspace Gauge, click here.

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