My friend and I bought the Ruger mark 2 target rifles when they first came out. Mine was in 22-250 his was in 220 swift. Both were legitimate 1/4 inch guns. I shot crows coyotes and porcipines past 400 yards with mine. The 22-250 shot 55gr B-tips and V-max into tiny little groups, it also liked 52 gr bthp. After the 150 round mark my rugers barrel cleaned up super easy, copper fouling was minimal. I would probably say it was one of the best factory barrels I've ever owned.