Hey man !
I am using Schneider bbl on my .243 AI . It just about refuses to copper foul after the initial break-in, so cleaning is a simple chore.
Course the best part is that it shoots ragged one holers . I realize that the bbl is only one part of that equation , however ,if the bbl is not up to job it doesn't matter if all the rest is .
Bottom line for me is they are great bbls, even though my personal experience is limited I have looked at a lot of evidence from reputable sources that say the same.
Jim Brown