Just took a video using a Teslong borescope of a new X-Caliber barrel a buddy of mine bought. I was a bit hesitant about possibly buying one but after seeing this video, I have to say, it looks as good or better than any other high quality barrel I've seen. He still hasn't shot it yet, but I'm sure it'll do just fine. I own several barrels by top manufacturers ex. Kriger, Bartlien, Proof, Shilen, ect. and the quality of this bore impressed me to say the least. This video is of an unfired bore and once by buddy shoots it, I'll report back but I don't expect any issues.