Optics
The M8 has 4x magnification, which means the shooter is going to see the target at four times the normal size at that distance. The field of view is 25 feet at 100 yards, which which means the shooter will see everything that is approximately 12 feet to either side of the target.
Size
The 1-inch tube is coated in magnesium fluoride, and it is 9.2 inches long with a weight of 7.5 oz. The reticle is fine duplex.
Discontinued
The Leupold M8-4X is a discontinued scope, and new-in-the-box models are hard to find.