I had a problem with a bolt face being machined wrong.

Wouldn't load a round in the chamber and if it did it would come out.

Mic'd the ID of the bolt face and got online and looked up bolt face IDs and got as close to a common round as possible.

They labeled a 6.5 Grendel I think it was as a 7.62 bolt.

Close but enough for a micrometer to tell the difference.

Swap a bolt from another and see if it does it.

I had to use everything I had to get that damn charging handle back to eject the round stuck in there.

Previous post on the bolt face. stamped wrong.

This post was edited on 10/1/22 at 10:26 am

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Posted by AdmiralApe

Member since Nov 2020

85 posts

Posted on 10/1/22 at 10:25 am to thejudge

I swapped a BCM BCG into it from a friends rifle for one magazine and it had no problems but not every magazine I fired with my BCG had a problem so I don’t know for certain if thats a problem. I wish I had used his BCG in my rifle for a bit longer but we ran out of ammo unfortunately.

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Posted by bbvdd

Memphis, TN

Member since Jun 2009

25191 posts

Posted on 10/1/22 at 10:32 am to thejudge

quote:
They labeled a 6.5 Grendel I think it was as a 7.62 bolt.

. 6.5 gr and 7.62x39 are the same bolt face, FYI

OP. No idea if the ramps are misaligned. It may be the upper that is cut incorrectly.
Is see that the barrel’s ramps and the uppers ramps are off slightly.

The barrel has an index pin on the top of the barrel that aligns the barrel and upper via a slot in the upper.

Swap your BCG and see if that helps.
Also, really clean that barrel and chamber. May have an imperfection in the chamber that is messing you up.

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