Carbon Ring Check (Help)

[Walker TR]

Just making sure I am looking in the right spot....is the Carbon ring where to the left side of the picture towards the muzzle or the right? The left of the pic is going towards the muzzle. And do you see a Carbon ring? Thanks for the help just making sure I am looking in the right places. Going through the process of elimination to find my potential pressure issues.

The semi solid grey line on the right center of the picture is not a carbon ring right? The carbon right is usually to the right of there?

 

[spife7980]

Screw your mirror in or out to adjust the focus correctly.

From what I can tell through the fog the top arrow is the chamber neck and so no, the carbon ring wouldnt be there, it has to be forward of the case but before the rifling is built up. But I reserve the right to be wrong based on that pic.

In any case its a good idea to clean your barrel and scrub the throat.

 

[Walker TR]

Screw your mirror in or out to adjust the focus correctly.

From what I can tell through the fog the top arrow is the chamber neck and so no, the carbon ring wouldnt be there, it has to be forward of the case but before the rifling is built up. But I reserve the right to be wrong based on that pic.

In any case its a good idea to clean your barrel and scrub the throat.

No Carbon ring ?...and if there was one it would be on the right side of the picture?

 

[Dthomas3523]

What issues are you having and what is the brass/bullet/powder/powder charge?

The spot on the left in the last pic may be a carbon ring

 

[Walker TR]

What issues are you having and what is the brass/bullet/powder/powder charge?

The spot on the left in the last pic may be a carbon ring

31.7 Varget Alpha Berger 105s 6 Dasher in an Impact 737.....started piercing primers and cratering yesterday and its happened before just cant pin down why. going through the process of elimination of factors

 

[Dthomas3523]

31.7 Varget Alpha Berger 105s 6 Dasher in an Impact 737.....started piercing primers and cratering yesterday and its happened before just cant pin down why. going through the process of elimination of factors

Bet it doesn’t happen with lapua brass though does it?

 

[Walker TR]

Bet it doesn’t happen with lapua brass though does it?

Yep happened with Lapua as well....32.3 with 105s in Lapua.....been running them there for years and just recently it started happening

 

[spife7980]

So what we are looking at in the new pic is labeled correctly, yes?

If so then I would call that highlighted area a carbon ring. Soak a patch and jam in in the neck and let is soak it for awhile. Then scrub the hell out of it until its gone and repeat.

 

[Walker TR]

So what we are looking at in the new pic is labeled correctly, yes?
View attachment 7310243

If so then I would call that highlighted area a carbon ring. Soak a patch and jam in in the neck and let is soak it for awhile. Then scrub the hell out of it until its gone and repeat.

Labeling is correct....Thank you Spife.....Usually the carbon ring shows up between the freebore and the neck correct? I know sometimes it can show up downstream but most of the time its where the case ends (trim length gap)....just checking my thinking

 

[Walker TR]

Labeling is correct....Thank you Spife.....Usually the carbon ring shows up between the freebore and the neck correct? I know sometimes it can show up downstream but most of the time its where the case ends (trim length gap)....just checking my thinking

Here is another pic that goes a little further down towards the muzzle (lands starting past the freebore)

 

[spife7980]

Thats exactly where I have had my issues with carbon rings and pressure, right there at the start of the rifling and the end of the freebore.

 

[Walker TR]

Thats exactly where I have had my issues with carbon rings and pressure, right there at the start of the rifling and the end of the freebore.

Thanks I will attack that area with a little iosso and get it nice and clean then see if my problems persists

 

[PAYDIRT]

After pics too.