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Old June 8, 2019, 11:36 AM   #20
Reloadron
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Join Date: June 8, 2016
Location: Cleveland, Ohio Suburbs
Posts: 1,750
Just for future reference Ballistic Tools makes a Small and Large Primer Pocket Swage Gage ® Set. Rather than having a full set of pin gauges these sets are well worth the $20 cost. I checked my set and they were right on the SAAMI specifications Unclenick mentioned earlier for primer pocket dimensions. Depending on the brass I also sometimes use a Chamfer & Deburring Tool to clean up and put a slight chamfer on primer pockets. All it takes is a simple light twist. Once you know your primer pocket width dimension it pretty easy to measure a few primers from the lot you have and know if they will inteference fit and just how easily they will seat in the pockets. Anyway for the price the Ballistic Tools are a nice to have.

Ron
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