Almost any Leupold scope should be fine. There are some scopes out there that are designated for shotguns and muzzleloaders. These normally have thicker reticles and more eye relief - which, as Cayugad recommends, is a good thing. Burris and Nikon are both pretty durable scopes - as is the Bushnell Trophy. I wouldn't choose one of the "economy" scopes - might not be able to stand up to the recoil and hold zero. The Leupold Rifleman or VX1 can be had for less than $200. That would be my first choice.

A lot of folks recommend scopes in the 1.5X6 or 2X7 power range. I don't see anything wrong with a 3X9 either, but doubt if anything more powerful is useful for hunting.

Also - don't try to save a buck on rings and mounts. Hard kicking gunsneedgoodscope attachment hardware.