I bought this barrel from Mitchell, he rechambered a 24" fluted 223 to get a true AI chambering. I fitted it to one of my frames with some 600 grit and about an hour worth of time. Put a surivior fore end on it, cheap Walmart bipod, a Mueller 4.5x14x40 APT 30mm scope, in cheap ebay rings. My main reason for buying it was to have a truck rifle I can use for shooting a random coyotes out to 400 yards or so and to fire form brass once I build a bolt action. I figured if I could get a 3" group at 400 yards with it I would be happy. I picked up a box of Winchester White box, the 46 gr HP's at "4000FPS". I had the rifle sighted in quickly with my future wife calling out where the bullets were landing on the side of the hill I had it on my steel plate target in 3 shots and just about dead nuts on the 4th shot at 100 yards.
There is a small gopher I bounced a bullet into, wasnt a direct hit but it worked.
Like I said I was hoping for a 3" group at 400 yards and it looks like it might actually happen once I get some good bullets loaded up. Those Winchesters only did about 3/4" at 100, 2.5" at 300, and 3 out of 5 hit the steel plate at
800 yards the plate is 7x12" , which took about 23.5-24 MOA to get it zeroed.
My steel plate target
Should be a good coyote rifle.