Posted April 9, 2019 1:00 pm by Comments

By Dan Zimmerman

nato primer sealant winchester ammunition
courtesy TTAG reader

A reader asks . . . I picked up two boxes of Winchester 9mm bulk at my local Wally World and found five of these red primers. Any ideas? That red stuff you’re seeing on the back of those round is primer sealant. When primers are press-fit into cases during the manufacturing process they usually […]

The post What’s Primer Sealant? And Why is it On Some of My Commercial Ammunition? appeared first on The Truth About Guns.

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Source:: Truth About Guns

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