I've personally had out-of-spec 6.5 and .30 cals that had to be replaced. The Bartlien's have been shooting holes lately. Best barrels I've had up to this point.
Can you elaborate on "out of spec"? Interior or exterior dimensions?
Yes please.
Absolutely.
The barrels interior dimensions were measured and found to be a bit larger in the groove diameter than caliber.
Had a Heavy Palma 10 twist on my .300 WM that shot well for about 200 rounds then went all to hell. That's what was found and it was replaced with a Bartlien.
My Creedmoor barrel was the same and the same solution was applied. They shoot now.
During this time, he was building a .300 hunting rig and had already chambered the Brux that was on it. Before he gave it to me, he measured it and immediately took it off and chambered a Bartlien.
It shoots now too.
