The Huskemaw 5-20 LR Rifle Scope features windage compensation technology, hunt smart reticle, True BC drop compensation, 30mm maintube, fast-focus eyepiece and full lifetime guarantee. It also comes with an instructional video that explains proper scope mounting, step-by-step, through the True BC process.

My husband recently purchased this scope for his 300 ultra mag, it's an execellent scope, well worth the price.

From the website:

The Huskemaw Optics 5-20 Long Range Hunter is the most advanced Ballistic Compensating rifle scope available. With technical advancements like True BC, the Rapid Field Ballistic Compensator and our simple yet powerful Hunt Smart rangefinding and windage compensating reticle.

The 30mm maintube, 50mm objective lens, and side focus parallax correction dial make the 5-20 LRH scope an outstanding choice for both varmint hunters and target shooters, but it includes special features for the big game hunter. Ballistic compensation and parallax adjustments are easily made without breaking shooting position, and the 50mm objective lens creates a brighter image for high magnification and low light use.

Our ballistic compensation technology is the first to accurately determine the drag model and ballistic coefficient (BC) for your bullet in your system. The 5-20 LRH is the first rifle scope built specifically to take advantage of a long range hunting situation.

There's more good information at the website, check it out.