The Black Diamond XR will fowl your breech and bottom of your scope something terrible. So I make a scope bikini out of duct tape and solve the problem. Other then that it is no different to clean then any other open breech rifle. Also mine shoots conicals very well with its 1-28 twist.

If you're not mounting a scope on it, then it is no harder to clean then any other rifle. And it does shoot Black Horn 209...