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POLISH AN LW POLYGONAL BARREL?

I've sent AGT an email and they would like me to ship the barrel back to them for inspection, and they'll determine if it's a factory defect 🙄 I was hoping they would just send me one so I wouldn't be without the rifle for 6 weeks. I bought it from Talon Tunes, and they clearly don't want to be involved.

Frankly, it shoots better in my limited testing after I polished it. I'm going to shoot it some more, and at distance, and if accuracy has improved despite the pitting, I'm just going to keep it. It sucks, but I'm not competing with this rifle, and if it's MOA at 100 (it was about this already) I don't have much to gain. I would just be proving a point. And I'd rather have my coyote hammer at the ready :)
Hi, I just happened to come across this post.

So, did you manage to swap out the CZ barrel successfully? How was the accuracy?

Actually, I ran into the exact same issue with a VULCAN barrel. I can't tell from the borescope if it's the groove or the land, but it's got some serious surface roughness.
However, I managed to restore the accuracy by carefully lapping it. Not sure how long it'll hold up though.
By the way, this is also a CZ barrel.
barrel1.jpg
barrel2.jpg
barrel3.jpg
 
I did not get it swapped. I did polish and firelap it though. It's still a shooter, so it wasn't worth my trouble to go any further.
Thanks for the reply.

I hear CZ barrels are known for their accuracy, but if there are issues like this, it makes you think twice.
By the way, the accuracy before the lap was terrible. However, since I also recrowned the muzzle at the same time, it's unclear whether the cause was actually inside the barrel.
 
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