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Carbon ring?

tthomp302

Gold $$ Contributor
Is this a carbon ring? I recently got a teslong borescope and want to know what I’m looking for. This is my 7 SAW with 513 shots on it. I’d this a carbon ring or normal? EEAC6C51-EB0F-41BA-9A81-270510EE843A.png
 
Is this a carbon ring? I recently got a teslong borescope and want to know what I’m looking for. This is my 7 SAW with 513 shots on it. I’d this a carbon ring or normal? View attachment 1435062
I'd encourage you to get a Sinclair Chamber Length plug and determine how long the chamber neck length is. Keeping the necks closer to the end of the chamber really helps with the carbon ring.
 
I'd encourage you to get a Sinclair Chamber Length plug and determine how long the chamber neck length is. Keeping the necks closer to the end of the chamber really helps with the carbon ring.
I think I realize what my problem is. Those shots were mostly all with Virgin brass. The Virgin brass is significantly shorter than what the chamber length is. I will trim them all now to keep them closer.
 
Like AIN says, I keep my brass about .005 under the length of my chamber and it helps minimize the ring. I also mix a small amount of TM solution in with KG-1 and it really gets rid of carbon and copper.
There is a bit of fire cracking starting in there too
 
Like AIN says, I keep my brass about .005 under the length of my chamber and it helps minimize the ring. I also mix a small amount of TM solution in with KG-1 and it really gets rid of carbon and copper.
There is a bit of fire cracking starting in there too
If you shoot a gun you will get fit cracking. Don't freak out. As a name benchrest gunsmith told me , your accuracy comes from the last 10 inches of the barrel. I think that is correct.
 
I think I realize what my problem is. Those shots were mostly all with Virgin brass. The Virgin brass is significantly shorter than what the chamber length is. I will trim them all now to keep them closer.
Please do not trim virgin brass! This will only exacerbate the problem. Brass should only be trimmed after full length sizing and the cartridge is at or exceeds the MAX TRIM LENGTH listed in your manual. Then trim to MIN trim length only. A SINCLAIR INTERNATIONAL trim length gauge can help you find what the actual MAX TRIM length is for YOUR CHAMBER. Min trim length will be .010 LESS THAN MAX TRIM LENGTH.
 
Please do not trim virgin brass! This will only exacerbate the problem. Brass should only be trimmed after full length sizing and the cartridge is at or exceeds the MAX TRIM LENGTH listed in your manual. Then trim to MIN trim length only. A SINCLAIR INTERNATIONAL trim length gauge can help you find what the actual MAX TRIM length is for YOUR CHAMBER. Min trim length will be .010 LESS THAN MAX TRIM LENGTH.
Again, it appears that he is referring to watching the length of the brass and, when trimming, keeping the brass so it's closer to the end of the chamber.
Essentially, ignoring the max trim length.
 
So I started to try to clean up the carbon ring. I took a brush 1 size over and put a soaked patch with butch’s bore shine and let it sit about 20 mins. It looks like it needs another round but a big improvement so far. 7BA6840C-3B49-4636-A1FE-8F78538CD139.jpeg
 

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