If it is, as
@J.d. Popkes opined, primary extraction then I would point the finger at Savage. The good news is that primary extraction issues are a much easier fix than with many other brands.
It seems you feel like there is an issue with the Proof Research barrel and, at least to that end, I would give the people at PF a call to discuss. You may be surprised by their willingness to "go the extra mile" to make sure you are satisfied with their product. I say that from a recent CS experience I had with them. They were absolutely fantastic!
My issue was a new SS prefit that not only had difficult extraction but ejected brass left a pretty deep ring al most all the way around the brass. A chip had gotten on top of the reamer.