IMO the base and rings are a very important part of the scope package that is often overlooked. I recommend the DNZ one piece mount for TC guns. They are solid and you will have your scope mounted quickly. This is the DNZ EER medium mount on my Pro Hunter. It's the same mount for the Triumph also. Depending on your scope you can choose between the standard mount or EER (extended eye relief) mount.



Check out Natchez Shooters Supply for an affordable scope. They run Simmons on sale all the time and offer factory refurbs also. I had good luck with the Pro Diamond 4x scope Semi mentioned. It handled alot of 3" mag sabot slug loads when it was on my Rem. 870 slug gun without any issues. Here is one example from Natchez. The 44 objective is one of my favorites.
http://www.natchezss.com/Category.cf...dTitle=Simmons 3-10x44 ProHunter Riflescope Truplex Reticle Matte