http://www.cameralandny.com/optics/p...ge=pentax89740
The folks at cameraland are great to deal with and I love my Gameseeker II.
These scopes may not be well known, but Pentax has a great reputation for camera glass and the scopes are assembled at the Burris plant in Colorado.
I bought the $99 variation and picked up the scope cleaning tool because Camerland provides FREE shipping if your order is over $100.
As for your ammo question, I suggest you get a box of Federals, a box of Remington, and a box of Winchester standard loads in 150 grain. You rifle will tell you which one it likes best