Have two of these barrels, both have shot extremely well. By far the most accurate of all the chrome lined barrels that I've owned. Decided to do a little accuracy evaluation and here are my results, most of the groups were hand loaded but they were not developed for these barrels. One of the groups is a 10 shot group of CBC 77gr factory ammo, which has shot well for me in two other barrels. All groups fired are 10 shots except for one, which is only four due to having only 15 rounds of the load and then one primer being a dud.
Range was 104 yards confirmed by laser rangefinder, rifles were rested with sandbags in front and rear bag. Optics used were a SWFA 12x42 mil/mil quad in the railed FF rifle and a Leupold Mark AR Mod 1 Firedot-G TMR in the non-FF FSB rifle.
This rifle fired all groups except #8 and I don't currently have a picture of the other rifle.
Ammunition used in this test
#1,3,6 all the same load (77gr TMK)
#2 (Different 77 TMK Load)
#4 and 5 (55gr Sierra Gameking)
#7 (CBC 77gr 5.56 Factory Load)
#8 Same load as 1,3,6 but with same barrel in different rifle. (Non Free Floating)
#9 (Different 77 TMK load)
Another target this is the same as #1,3,6 (77 TMK)