Factory Ammo Popped Primer Follow Up

[PeteS]

The top primer looks to be cratered, but could be as simple as a poor firing pin/hole fit.  The other two appear punctured and  burned through, so could have been as simple as too much protrusion for those primers .  Unless the primer pockets are loose, it wasn't high pessure.

Savage uses a barrel nut system to adjust headspace, so shame on Savage for allowing such to escape their factory, BUT, if you had excellent accuracy, I wouldn't  blame the barrel or chamber.  I WOULD be taking a seriously hard look at the boltface, firing pin, and protrusion.

I HAVE a Marlin 1894c 357Mag that suffers from the sloppy firing pin fit (cratered primers).  I've had primers burn through like you've pictured, and switching primers made that go away.  I've had primers that burned through at the edge that was a primer issue (split cups).  I HAD a Ruger #1 in 22 Hornet that BLEW primers with different lots of factory ammo, sometimes the primers fell out when the action was opened, and THAT was a bad barrel (too tight bore).

I know the Savage firing pin hole is to big cause the primers do smush into the firing pin hole so definetly to much room around the firing pin. But I guess thats just the slopiness of a quick made gun and not custom.