Originally Posted by Mikecr
If you don't have a borescope, a local gunsmith probably does. I'd have the bore/crown looked at. It's hard to guess at, so that's just where I'd start.
If there is an issue there, you might salvage the situation with a going of Tubb's FinalFinish.
Not sure as to what you are thinking????
This is a new rig with a Brux barrel.
Called 'smith. Was told to try a differnt lot of Bergers.
The ones I was using were in the old yellow box. Thinner jacket?
Might be as simple as this.