Now that 8 months have elapsed on this thread, it's worthwhile to revisit the subject. There has been some changes in recent months. PBB has been placed under contract to provide CF barrels to Browning, so I would imagine that they did a lot of due diligence ..... and probably testing. It's July 2024 now, and I took the plunge into the shark infested waters. It will be another 10 weeks before I get the barrel, and a bit longer to break it in and provide feedback. It will be a 24 inch, Tikka T3 in 300 WSM - with GRS Bifrost stock, Tract glass, and QD suppressor.