Leupold Mark 4HD 4.5-18x52 review and comparison to Mark 5HD

BigJimFish‬ reviews the Leupold Mark 4HD 4.5-18x52mm and compares it the the Mark 5HD 5-25x56 he previously reviewed. The review includes a good deal of discussion of the differences between the Mark 5HD and the Mark 4HD as well as optical comparisons between those scopes, the Sig Tango 6, Sightron S6, Athlon Ares BTR, and a 6-24x25 Leupold Mark 4HD. The review also includes a discussion of mechanical testing results, and field use notes.