Myself and a bunch of other Grendel shooters didn't get that memo. I wonder if ARC is running at higher pressure?
I've got multiple thousand rounds on one and never had an issue. Maybe not 5k+, but easily 2-3k.
I have seen one broken extractor on a new 6.5G bolt after ~100 rounds that I attribute to a manufacturing issue. Still should not have happened.
Bolt thrust is a real issue and why the Grendel isn't hotter than it is. If the max can run at much higher pressures with the rebated case head that could be an advantage.
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