I have the VX-HOG 1-4x20. The glass is excellent. When set on 1x, you can easily acquire the reticle with both eyes open.

Reticle Information:
Zero Range: 50 yards
First Hold: 1-mil (300 yards)
Second Hold: 2-mil (400 yards)
Third Hold: 3-mil (500 yards)

Based on .30-06, 180gr loads.
(Which conveniently works for a .308)