Barrel cleaning help

[ewnanney]

Hey, I am attempting to clean a M70 rifle I inherited from my Grandfather. I need help diagnosing barrel condition that I am not familiar with. I have attached bore scope picture with what looks like carbon but it not responding to my Carbon cleaner. Any suggestions on what this might be and course of action to resolve. Thanks

 

[Huntaddict]

That appears to be what we call Alligator skin. It is the degradation of the actual metal in the barrel. This is not repairable without removing considerable material.

 

[PopNFresh]

 

[Varmint Hunter]

Soak the bore periodically with a solvent that may be left in the bore, like BoreTech Eliminator. Leave the rifle in a cleaning rack with the muzzle tipped down a little. Then run a wet brass brush through numerous times and see what is removed and what isn't. If that doesn't work, I'd use JB or maybe ISSO after another bore soaking.

Fouling can be particularly resistant to cleaning so don't give up too easily. Baked on carbon can be EXTREMELY difficult to remove.

 

[ewnanney]

I have let it soak overnight with Boretech Carbon remover, it worked well around the Neck(carbon ring) and throat. This web looking stuff isn't budging. I am pretty sure the barrel has been neglected for many years. I may try some JB.

 

[Brathany]

Fire cracking doesn't clean out.

 

[ewnanney]

I would expect fire cracking in the throat, the throat of this rifle is not all that bad. These spots are 12 inches down the barrel in random spots all the way to end of bore.

 

[Brathany]

Corrosion. Use the ThorroClean system. Whatever is left is left. Corroded barrels can still shoot great.

 

[Sdvldog1371]

Chromoly or stainless barrel? If its stainless, it may be pitting from ammonia based solvent that didnt get fully removed during cleaning. I'd wet patch the crap out of it with KROIL over a few days. Then punch it a bunch with a bronze brush 1 caliber larger. If it doesn't clean out, kroil it again and go HAAM with a caliber specific brush. If that doesn't work it's likely pitting.

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