Whats going on here?

[jLorenzo]

???

 

[Slides]

You have swarf on your bolt face?

 

[Texasflyer]

Did the firing pin get stuck? Kinda looks like it stayed out while it ejected to me

 

[supercorndogs]

As of right now, I am going cross eyed staring at a blurry ass picture, trying to figure out what a swarf is.

There was something on your bolt face when you fired that one.

 

[drew_235]

As of right now, I am going cross eyed staring at a blurry ass picture, trying to figure out what a swarf is.

There was something on your bolt face when you fired that one.

I agree, the picture is too small and blurry to tell too much.
(swarf is machining debris...that may have been on the bolt face when the OP fired this round)

 

[spife7980]

, trying to figure out what a swarf is.

 

[Baron23]

View attachment 7601992

Haha. Yeah, it’s the plural of Klingon Warf lol

 

[jLorenzo]

Did the firing pin get stuck? Kinda looks like it stayed out while it ejected to me

This makes sense. I need to double check my brass with the headspace comparator. This is a brand new barrel.

 

[jLorenzo]

As of right now, I am going cross eyed staring at a blurry ass picture, trying to figure out what a swarf is.

There was something on your bolt face when you fired that one.

It happened more than once.

 

[ShtrRdy]

Is this a pistol cartridge?

 

[jLorenzo]

Is this a pistol cartridge?

.223

 

[whatsupdoc]

Maybe post a smaller pic and not state what rifle or other particulars because most people here are mind readers.

 

[jLorenzo]

223 AR15

 

[Downtown]

Maybe firing pin a little sticky. Here's an old post.

Gunsmithing - sticky AR15 firing pin

The other day I was cleaning and lubing an AR15 and noticed that the firing pin is a bit sticky in the bolt. With very little pressure it will pop out of the firing pin hole as firing pins do on other AR15's. Does this mean I need a new firing pin, new bolt, is this within normal "specs"...

www.snipershide.com

 

[supercorndogs]

I can't see how the case head could slide around on the bolts face and make those marks with the firing pin.

 

[supercorndogs]

IS there something sharp on your bolt case that is doing it during feeding?

 

[supercorndogs]

This makes sense. I need to double check my brass with the headspace comparator. This is a brand new barrel.

I don't think that explanation makes any sense. The case head does not slide across the bolt. The ejector pushes it on one side and it pivots toward the extractor. If the firing pin was stuck out, you would find out when it rammed the next round into battery; and it went bang again.

 

[Downtown]

I don't think that explanation makes any sense. The case head does not slide across the bolt. The ejector pushes it on one side and it pivots toward the extractor. If the firing pin was stuck out, you would find out when it rammed the next round into battery; and it went bang again.

Of course, you're absolutely correct.

 

[918v]

IS there something sharp on your bolt case that is doing it during feeding?

+1

I think the bolt stripping the round from the mag is scratching the head stamp.

 

[nutation]

Some little piece of metal (swarf) may have shaved off of one of the bullets during loading, and ended up on the bolt face. Check the diameter of that mark.

 

[Slides]

I doubt you would mark the primer that much feeding from the mag, combustion pressure is doing that.