If you think your going to shoot 200 yards then you need a 3-9X40 mm at least. Natchez has the Bushnell Banner Dusk to Dawn with 6" eye relief for around $65.00. A good brand name and good scope although I just bought one and must have got a bad one, it is on its way back for replacement.

The important thing with these rifles is eye relief and a strong scope to take the brutal recoil they somethings get. The shotgun scopes are a good choice...