Sometimes it's the little things.

[Acyr]

Barrel must be bad.... Nope.

 

[joshb]

Can you pan out a little so I know what I’m looking at?

 

[Pres100]

Looks more like a bolt shroud ... at least the top pic is definitely...

The 2nd pic is where the pin wasn't driven in all the way and bound up on the inside of the shroud.

 

[boltfluter]

Can you pan out a little so I know what I’m looking at?

Josh,
Cross pin holding the cocking piece on firing pin is not centered causing the pin to drag on bolt shroud. Can make for some stellar accuracy! Not!! Seen a few of these in my time.
Paul

 

[joshb]

Josh,
Cross pin holding the cocking piece on firing pin is not centered causing the pin to drag on bolt shroud. Can make for some stellar accuracy! Not!! Seen a few of these in my time.
Paul

Aha! Now I see it! The second pic looked like the part was wrapped in copper. It’s just a reflection of the hand holding it! I got it!
Thanks!
Where are my readers?

 

[Acyr]

Looks more like a bolt shroud ... at least the top pic is definitely...

The 2nd pic is where the pin wasn't driven in all the way and bound up on the inside of the shroud.

Yes, cocking piece firing pin cross pin walked its way out in about 1200 rounds.

 

[AlNyhus]

Good catch!

 

[Alex Wheeler]

Yep, thats why I open up the back end on those shrouds when I do a "blueprint" job on them.

 

[Acyr]

Yep, thats why I open up the back end on those shrouds when I do a "blueprint" job on them.

This one had a solid pin instead of a split roll pin. I will replace it with a split roll pin.