RE: t/c black diamond xr
I really like the way my XR shoots. 1'' groups at 100 yard, 2.5'' at 150 yards. As far a cleaning, I would recommend buying the leupold quick release rings and bases if you are going to use a scope. It makes cleaning much easier, and you can take the scope off for black powder season (scopes not legal during BP season in many states) and reattach without having to resight in. I believe leupold guarenttes it will be within 1/2 of Zero when reattached or somthing like that.