What Could Cause Brass to get “stuck” on the bolt/extractor when manually cycling the action on 6 arc gas gun?

[WeR0206]

The below happened when I was at the range today and manually cycled the action to make sure there wasn’t a sticky bolt close/open. It closed and opened fine but when the cartridge got to the point where it should have shot out of the upper it didn’t and instead it just clung to the extractor claw. I had to pull it off by hand. It didn’t happen for every round in the mag but it did happen maybe 2-3 times out of 10. I checked and the ejector plunger moves freely/isn’t sticky. Mag being used was a duramag 6.5 gendel 10 round.

This is a rubber city armory bolt with sprinco 5 coil extractor spring (with insert but no o-ring) and sprinco ejector spring with only 100 rounds on them.

 

[Edsel]

Issues with the ejector and its spring, perhaps?

Resistance should be significant even when using the cartridge as a lever.

 

[WeR0206]

Issues with the ejector and spring, perhaps?

That was my first thought but the sprinco springs in the bolt are still practically new with only 100 rounds on them. I can swap the springs out pretty quickly or I actually have a spare bolt I can try to see if that narrows things down.

 

[bfoosh006]

Also...check the claw of the extractor... it wight be holding onto the case rim.

 

[WeR0206]

Also...check the claw of the extractor... it wight be holding onto the case rim.

View attachment 8721315

The claw definitely seems to be holding onto the case rim. I can see two parallel claw marks on the heads of a lot of brass. I will switch to a weaker extractor spring I guess?

Pics of extractor:

 

[45-90]

Probably the extractor...just switch out with another brand of bolt that works from your 6.5 Grendel or from another 6mm ARC, or any type 2 bolt or complete bolt carrier "that's working" in your collection or from a range friends gun...probably work flawlessly in yours too.
Throw your current bolt in an emergency parts drawer tagged to be fixed later... or not.
Bolts are fairly cheap and an expendable part, no need for an expensive one.
They all come from the same few manufacturers.