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I recently received a 391 target barrel in trade. Being overly excitable and not particularly maintenance-oriented, I started shooting the gun with this barrel after cursory inspection. After some number of rounds (upwards of a thousand) during which I cleaned the piston and mag cap and rod only, the gun started to have cycling issues.
Turns out the valve (part the piston goes into) might not have ever been cleaned. I have scraped and oiled, used a pick and finishing nail tapped with a hammer to clean the four holes in the valve, used a wire to clean the two holes going into the barrel.
There is still a nice layer of crud inside the valve. I can only see metal in a couple of places.
Is there a cleaner that will work in this residue without harming the metal? Is there a particular tool which works well on cleaning this area?
This is the original Urika model, BTW, not the Urika 2.
The barrel is fine, and is not damaged.
Danny
Turns out the valve (part the piston goes into) might not have ever been cleaned. I have scraped and oiled, used a pick and finishing nail tapped with a hammer to clean the four holes in the valve, used a wire to clean the two holes going into the barrel.
There is still a nice layer of crud inside the valve. I can only see metal in a couple of places.
Is there a cleaner that will work in this residue without harming the metal? Is there a particular tool which works well on cleaning this area?
This is the original Urika model, BTW, not the Urika 2.
The barrel is fine, and is not damaged.
Danny