As there are a boatload of DIY AR builders out there that don't have chamber go/no gauges... the assumption being that no one could possibly screw up a barrel extension or bolt, I'm more concerned about case stretch and possible separation than anything else.
The plan is not to feed another round into the chamber until you've confirmed the gun cycled, extracted and ejected properly... and that the case has no obvious signs of injury.
Safer than sorrier and all that...
C
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