It just so happens that I do indeed have a Kodiak, and it's a .25 to boot! I think you will be happy with this rifle in that not only is it very powerful, it's accurate as well. These rifles are very well finished and are fun to shoot. I might add that some people find them somewhat difficult to cock, but if you are a relatively robust individual, you should have no problem.
Although I enjoyed my rifle from the start, I decided early on to have a gas ram spring installed. The gas ram transforms an excellent rifle into an awesome rifle, but be forewarned, with this modification they aren't for the faint of heart when it comes to cocking. I have been using an old Beeman model 66 scope on mine, but I do believe that my brother uses a Bushnell Trophy(4x14) on his. Neither one of us has encountered any scope related problems. I used the Beeman one-piece mount without any troubles whatsoever.
The Kodiak is Beeman's version of the Webley Patriot so do not be misled by nomenclature. If you go to the American airguns classified ads site you will find that some fellow is selling one of these rifles for around $350 (if memory serves me correctly), which is a great deal.
If you get one, try the Diana Magnum pellets. Everyone I know who shoots .25 caliber airguns has been pleased with this pellet.
Ciao,
Phillip