New 10" barrel, bullet stability problems

[Titleiiredneck]

Originally Posted by snipecatcher

It's threaded 1/2x28, the same as the Shilen barrel I had before it. -Dan

Quick question, ya think it could be because the muzzle walls are so thin with the .308 bore vs the 1/2 od? Why I ask is had having a simmilar problem with one of my sbr uppers in 9mm. Thin walls can cause warpage when threaded, in which case it may cause the bullet to wobble when leaving the muzzle, just a thought.