How do I get this stuff off

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Nacho Man

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Oct 17, 2015
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Just got my NAA 22 mag today.
It looks like copper shards fused to inside of my barrel. Never seen this before.
A few pieces fell out but theres two rough spots. I'm soaking with some Sweets 7.62 right now.
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Oh great, I guess I'll email naa.
Waited 2 weeks to finally get my hands on this gun.
 
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Gonna soak with some oil and see if it will lift off. It looks like its plastered on there pretty good
 
I think some of it's coming out.
I'm keep scrubbing away. I wonder if I just shoot it out
 
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I was able to make some headway trying different cleaners. Hoppes seemed to work best, big chunk of copper shard came out and theres only a very small piece left in there. Unfortunately my brush is destroyed but I'll go get some new ones from cabelas in the morning.
Here's some better pics of the bore before I started cleaning again.
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After 20 mins of vigorous scrubbing this came out.
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Which brings me to wonder.
Is the bore too tight, or the bullets in those test rounds over sized to be able to shave copper off the bullet like that. The chamber alignment on the cylinders to bore look good to go imo.
 
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Something strange for sure, that copper is huge . What ammo did you use and did you try more than one ? I would surely give them a call, this could be a known issue and could also be ammo specific .
 
Could be the light but it looks as if there is a raised edge between the grooves in that area. It seems to run the circumference of that area if the barrel.
 
That barrel should have never left the factory. I'm afraid the next time you shoot it you will be doing this again.

It appears to be machining defect that was left by the reamer. Went in crooked and gouged out a section since it looks to be more on one side than the other.
 
Something strange for sure, that copper is huge . What ammo did you use and did you try more than one ? I would surely give them a call, this could be a known issue and could also be ammo specific .
It's new, that's what's left from the test fire at the factory lol.
 
Went and shot 50rds of CCI MAXI MAG 40gr TMJ.
This lil sucker is bad ass, I love this thing lol.
First shot caught me off guard, almost flew out of my hand heh. Haven't shot a handgun in over a year, but this little guy was printing well.
I checked the barrel and see no indication of copper pieces so it probably was the ammo they used for test firing at the factory.
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I am curious of their process now, the radial “rings” being in both on top of the lands and down in the groove must have come from the rifling process they use. Looks like you’ve taken the lands down enough to get rid of the offending ones.
 
I think yet another example that .22 mag is "different". Little in general about other calibers necessarily applies to .22 WMR and little specific about .22 WMR applies to all other calibers in general. This is what makes .22 mag interesting, challenging, sometimes frustrating, but yet ... mostly ... FUN!!
 
I think the hardest part if figuring out how I'm gonna carry this gun as a backup.
I usually carry a lcp in my pocket, so I'm thinking of getting a driving holster for my belt or getting the folding grip and carrying on my waist or back pocket.
 
Motor oil has detergents. Try letting the bore soak overnight, in some Mobil1. Then patch it out. Leave the bore lightly
oiled, this way, till the next time you shoot. This process may help dislodge any foreign particles.
 
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