We examined the lugs and they appeared to be true, then looked in the recesses and they looked good. I could not find any discrete set-back.
Yes, the barrel has been removed and we're gonna check the action after lunch, to be double-sure. But I'm sure this was a weak bolt head pin that just gave way. This gun has used factory ammo only so I'm pretty confident the action is fine. It had to be blue-pilled at the factory anyway, with pressures exceeding 85,000 psi. It's hard to get around the 2-piece bolt design as it can fail, which is why they never received any government contracts and are seldom used in the bench circuits.
This is my first experience with this type of failure and I lay the blame on the pin. The bolt head looked fine save the hole where the pin goes through. It showed very slight wear, but I could mis-interpret it as a sloppy tolerance.
Thanks for the help, too.
Go Ahead- Melt the Copper Off
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