What does everyone think of this carbon ring removal method

[Davey Boy]

Below is your chamber/throat bore scope photo and below that is a chamber/throat image. I think what you are seeing is the end of the chamber's neck and the beginning of the throat. In my Image, it is labeled "Length Clearance" with the angled ramp before the throat.

Oh so this isn't the carbon ring. I misunderstood. I then take it that the carbon ring forms just a little further down the bore just before the lands start. If thats the case LOL I have been cleaning with Slip 2000, KG1, Wipeout, Patch out, Carb out, and thinking of trying Brake cleaner, seafoam and steam, trying to get rid of that ring. Wow now I know that I did learn something. Who woulda thunk it. Boy do I feel dumb.

 

[Davey Boy]

Good job on the pic, also clearly shows the danger involved with letting your brass "grow" too long. Jams into the length clearance ramp and crimps your bullet for you,... not good!

I trim after each firing, and my case necks just touch this ring but doesn't cover it. All has been good in that respect. I do trim a touch longer than sammi trying to avoid what I thought was the carbon ring.

 

[Uncle Ed]

Oh so this isn't the carbon ring. I misunderstood. I then take it that the carbon ring forms just a little further down the bore just before the lands start. If thats the case LOL I have been cleaning with Slip 2000, KG1, Wipeout, Patch out, Carb out, and thinking of trying Brake cleaner, seafoam and steam, trying to get rid of that ring. Wow now I know that I did learn something. Who woulda thunk it. Boy do I feel dumb.

If you want to clean it again I added some carbon below with the aid of Microsoft paint.

Don't feel bad I just had the second eye done for cataract surgery and had to use a braille paintbrush in your bore scope photo.

 

[Davey Boy]

LOL Thank you Uncle Ed You just saved me years of work, as I was cleaning something that wasn't going to come clean. Now I will reload that pic into MS Paint and clean it.

Boy do I feel dumb, should never have gotten the Teslong, but glad I asked for clarification. Many thanks to all responders, and especially you Uncle Ed. My gratitude.

 

[Uncle Ed]

LOL Thank you Uncle Ed You just saved me years of work, as I was cleaning something that wasn't going to come clean. Now I will reload that pic into MS Paint and clean it.

Be careful with reloading it into MS Paint and cleaning the carbon again, you could end up with a bad case of throat erosion.

 

[Davey Boy]

Too funny. LOL

 

[Straightshooter1]

Oh so this isn't the carbon ring. I misunderstood. I then take it that the carbon ring forms just a little further down the bore just before the lands start. If thats the case LOL I have been cleaning with Slip 2000, KG1, Wipeout, Patch out, Carb out, and thinking of trying Brake cleaner, seafoam and steam, trying to get rid of that ring. Wow now I know that I did learn something. Who woulda thunk it. Boy do I feel dumb.

Yeah . . . that doesn't look like "carbon ring", though that's some carbon coating on the Second Shoulder.

Here's some pictures of before and after cleaning out the carbon ring in my .308 chamber:

This one from starting to clean showing a carbon coating on the Second Shoulder and the carbon ring (partially cleaned) to the right


Next. .. here is that second shoulder cleaned and the carbon ring removed



The carbon ring actually went underneath the case mouth. This pick is with an empty case chambered before the whole carbon ring is removed

 

[Davey Boy]

Ok now I see a carbon ring ahead of the lenght clearance as Uncle Ed describes. Thanks Sharpshooter.

 

[Straightshooter1]

Ok now I see a carbon ring ahead of the lenght clearance as Uncle Ed describes. Thanks Sharpshooter.

Your welcome.

And BTW and FYI, I just figured out something regarding how we use the bore scope: When I insert my Teslong bore scope from the muzzle end that second shoulder part of the chamber shows up as black, as though it's covered with carbon (like in your picture and my first picture). However, when I insert my Teslong from the chamber end, that area looks clean as a whistle (like in my second picture). So, apparently when inserting the bore scope from the muzzle end, the angle of the light creates a dark/black shadow that tends to look like a carbon deposit, but it isn't necessarily.

 

[Davey Boy]

Interesting, I will insert from the breech end and see if it looks different. Never thought of that.
Thanks
Dave

 

[Texas10]

The end of the chamber is cut in a 45 degree angle into the beginning of the throat. That is the dark black line you see in your picture and is simply reflecting light differently.

 

[JMayo]

It's about keeping down a buildup that keeps the shell case from seating properly.
Making That area "spotless" is leading to problems from excessive cleaning. Imo

 

[fatelvis]

I like the idea of using an ear plug, to plug the bore for solvent. Cheap, and very effective!

 

[manitou210]

Anyone use KG Carbon remover

 

[One Eye Pete]

I used to use Iosso on an oversized bronze brush. I would attach the brush to a short cleaning rod, and lock the brush to the rod with an 8/32 nut. this way I could rotate back and forth in both directions without the brush loosening up. Without a bore guide I would insert it only enough to reach the end of the chamber neck where the carbon ring is. This method worked but Iosso is a bit abrasive and I don't like using abrasives in the barrel especially near the lands unless it is absolutely necessary. I then tried Chevron Techron fuel injector cleaner, which works really well on carboned up injectors but it didn't work too well on the carbon ring. What I have found to work really well is SEAFOAM which is used to clean caked on carbon deposits from engine valves. It is available at almost all auto parts stores and comes as a liquid and an aerosol. I use the aerosol and spray some on the bronze brush before I insert it. I then rotate the brush back and forth about 20 times and check with the bore scope. Most of the time one application gets it. If the ring is badly built up you may have to spray some into the chamber (the can comes with a long thin spray tube attachment) and let it soak before brushing. Seafoam also works great on a patch to remove carbon from the barrel and it is cheap compared to bore cleaners. (By the way I do use it on my cars to clean the valves on engines with direct fuel injection and it works well there too.)

 

[fatelvis]

This Maybe a stupid question,But why do many use an oversized brush In thier bore?

 

[Ccrider]

This Maybe a stupid question,But why does everybody use an oversized brush In thier bore?

Size matters.

 

[One Eye Pete]

I don't normally use an oversize brush in the bore, only in the chamber neck area which is larger than the bore. if you try to use a bore size brush to remove the carbon ring in the neck area it wont work because the diameter isn't large enough to scrub the surface,

 

[fatelvis]

I don't normally use an oversize brush in the bore, only in the chamber neck area which is larger than the bore. if you try to use a bore size brush to remove the carbon ring in the neck area it wont work because the diameter isn't large enough to scrub the surface,

I see... that makes perfect sense. Thank you

 

[Joe Salt]

I clean the chamber before any bore guide goes in! With my 300 WSM I use 30. cal. Brush with a 3" patch wet it with brake cleaner, spin it in the chamber. Repeat with second patch. Now I take a 35 Cal. brush sprayed with brake cleaner go in with that, Not in the bore but just the chamber, you can feel when you get to the neck area. Turn it a few times back and forth a few times, now go back to first step with patch and brake cleaner. My chamber rods are all set up for this so I can go back and forth if needed. works for me.

Joe Salt