High most likely if it's a Banner, it has a pretty good size power ring and ocular bell. If you remove a little off the hammer, you can use mediums. See low Profile Hammer modification in the FAQs. The 3-9x50 Banner has the same power ring and ocular bell as the 1½-4½x32 Banner in the pic below, if you can move the scope back a little, you might be able to get away without modifying the hammer.
Tim